Finding the Fourth Proportional to 120,253.99, 165,938.62 and 66,531.55
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Solution
The fourth proportional to 120,253.99, 165,938.62 and 66,531.55 is: 91,806.96
Step by Step Solution
- Step 1: Write the proportion equation
120,253.99 : 165,938.62 = 66,531.55 : x - Step 2: Convert to fraction form
120,253.99/165,938.62 = 66,531.55/x - Step 3: Cross multiply
120,253.99x = 165,938.62 × 66,531.55 - Step 4: Simplify right side
120,253.99x = 11,040,153,593.46 - Step 5: Solve for x
x = 11,040,153,593.46/120,253.99 - Step 6: Final answer
x = 91,806.96
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.