The ratio of the amount of money mike has to the amount of money peter has is 3:2. Sean has thrice the total amount of money that mike and peter have. Mike has $54. How much more money does Sean have than peter?
If the ratio of the amount of money mike has to the amount of money peter has is 3:2, then Peter has 2/3*$54=$<<2/3*54=36>>36
The total amount of money that Peter and Mike has is $36+$54=$<<36+54=90>>90
Sean has thrice the total amount of money that mike and peter have, a total of 3*$90=$<<3*90=270>>270
Sean has $270-$36= $<<270-36=234>>234 more than Peter. Answer: \boxed{234}.