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Finding the Fourth Proportional to 137,988.92, 206,939.63 and 59,081.96

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Solution

The fourth proportional to 137,988.92, 206,939.63 and 59,081.96 is: 88,604.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,988.92 : 206,939.63 = 59,081.96 : x
  2. Step 2: Convert to fraction form
    137,988.92/206,939.63 = 59,081.96/x
  3. Step 3: Cross multiply
    137,988.92x = 206,939.63 × 59,081.96
  4. Step 4: Simplify right side
    137,988.92x = 12,226,397,611.97
  5. Step 5: Solve for x
    x = 12,226,397,611.97/137,988.92
  6. Step 6: Final answer
    x = 88,604.20

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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.