Finding the Fourth Proportional to 129,757.43, 193,346.27 and 115,608.75
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Solution
The fourth proportional to 129,757.43, 193,346.27 and 115,608.75 is: 172,263.90
Step by Step Solution
- Step 1: Write the proportion equation
129,757.43 : 193,346.27 = 115,608.75 : x - Step 2: Convert to fraction form
129,757.43/193,346.27 = 115,608.75/x - Step 3: Cross multiply
129,757.43x = 193,346.27 × 115,608.75 - Step 4: Simplify right side
129,757.43x = 22,352,520,013.82 - Step 5: Solve for x
x = 22,352,520,013.82/129,757.43 - Step 6: Final answer
x = 172,263.90
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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.