Finding the Fourth Proportional to 129,715.43, 193,283.62 and 115,566.75
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Solution
The fourth proportional to 129,715.43, 193,283.62 and 115,566.75 is: 172,201.26
Step by Step Solution
- Step 1: Write the proportion equation
129,715.43 : 193,283.62 = 115,566.75 : x - Step 2: Convert to fraction form
129,715.43/193,283.62 = 115,566.75/x - Step 3: Cross multiply
129,715.43x = 193,283.62 × 115,566.75 - Step 4: Simplify right side
129,715.43x = 22,337,159,502.72 - Step 5: Solve for x
x = 22,337,159,502.72/129,715.43 - Step 6: Final answer
x = 172,201.26
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.