Finding the Fourth Proportional to 121,757.58, 168,024.97 and 68,042.58
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Solution
The fourth proportional to 121,757.58, 168,024.97 and 68,042.58 is: 93,898.49
Step by Step Solution
- Step 1: Write the proportion equation
121,757.58 : 168,024.97 = 68,042.58 : x - Step 2: Convert to fraction form
121,757.58/168,024.97 = 68,042.58/x - Step 3: Cross multiply
121,757.58x = 168,024.97 × 68,042.58 - Step 4: Simplify right side
121,757.58x = 11,432,852,463.22 - Step 5: Solve for x
x = 11,432,852,463.22/121,757.58 - Step 6: Final answer
x = 93,898.49
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1.5x scale
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.