Finding the Fourth Proportional to 121,593.75, 182,240.87 and 86,342.55
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Solution
The fourth proportional to 121,593.75, 182,240.87 and 86,342.55 is: 129,407.48
Step by Step Solution
- Step 1: Write the proportion equation
121,593.75 : 182,240.87 = 86,342.55 : x - Step 2: Convert to fraction form
121,593.75/182,240.87 = 86,342.55/x - Step 3: Cross multiply
121,593.75x = 182,240.87 × 86,342.55 - Step 4: Simplify right side
121,593.75x = 15,735,140,998.31 - Step 5: Solve for x
x = 15,735,140,998.31/121,593.75 - Step 6: Final answer
x = 129,407.48
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.