Rachmadian, who picked up 70 million rupiah as first runner-up, won the first match against fifth-seed, Hassan Alshaikh of Saudi Arabia and sixth-seed Chow, 199-172-183 to advance to the next match.
The Indonesian defeated third-seed and newly-crowned Classified division Masters champion, Sukinto Wijaya of Indonesia and Youth division Masters champion, Muhammad Azizi Naim of Malaysia, 254-175-230 to challenge the second seed.
There was no stopping Rachmadian as he dispatched top qualifier and second-seed, Chong Jun Foo 247-188 to face the Thai in the title match. Chong, who settled for second runner-up, took home 35 million rupiah.
Sukinto, Muhammad Azizi, Alshaikh and Chow earned 20, 15, 10 and 9 million for finishing fourth to seventh positions respectively.
Gatot Soedijono, committee member of Indonesian Bowling Federation presented the trophies and prizes to the top three winners.