A statistic question.

#1
Provider Charge(Total) Fraud %Fraud Fraud*%Fraud
A §§§§§§§1000§§§§§§§600§§§§§0.6§§§§§§360
B §§§§§§§100§§§§§§§§70§§§§§§0.7§§§§§§49
C §§§§§§§10§§§§§§§§§8§§§§§§§0.8§§§§§§6.4
D §§§§§§§1§§§§§§§§§§1§§§§§§§1.0§§§§§§1

Please ignore "§" above.

Which provider should be given alert?
I am creating a model and setting up a threshold as above. Which provider should be given alert? If %Fraud is used, then provider D should be given alert. Obviously, it is unreasonable. Then, I want to use Fraud*%Fraud, the results are pretty reasonable.
Question: 1)Are there any statistic theory about Fraud*%Fraud? If so, what is the theory?
2)If Fraud*%Fraud is unreasonable. Are there any better suggestion?
Thanks in advance.
 
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