Looks like you've got it - your original amount in 1990 ( 125,000 ) has inflated to 225,899.01 in 2014. This isn't supporting per annum values.
Purchasing power = Amount of money * (cpi (this year) / cpi (last year)).
Inflation rate = cpi (this year) - cpi (last year) / cpi (last year) * 100