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Finding the Fourth Proportional to 126,387, 189,635.85 and 59,874.66

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Solution

The fourth proportional to 126,387, 189,635.85 and 59,874.66 is: 89,838.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,387 : 189,635.85 = 59,874.66 : x
  2. Step 2: Convert to fraction form
    126,387/189,635.85 = 59,874.66/x
  3. Step 3: Cross multiply
    126,387x = 189,635.85 × 59,874.66
  4. Step 4: Simplify right side
    126,387x = 11,354,382,042.56
  5. Step 5: Solve for x
    x = 11,354,382,042.56/126,387
  6. Step 6: Final answer
    x = 89,838.21

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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.