Finding the Fourth Proportional to 123,057.28, 169,819.74 and 69,343.12
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Solution
The fourth proportional to 123,057.28, 169,819.74 and 69,343.12 is: 95,693.90
Step by Step Solution
- Step 1: Write the proportion equation
123,057.28 : 169,819.74 = 69,343.12 : x - Step 2: Convert to fraction form
123,057.28/169,819.74 = 69,343.12/x - Step 3: Cross multiply
123,057.28x = 169,819.74 × 69,343.12 - Step 4: Simplify right side
123,057.28x = 11,775,830,609.19 - Step 5: Solve for x
x = 11,775,830,609.19/123,057.28 - Step 6: Final answer
x = 95,693.90
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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.