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Finding the Third Proportional to 87,376 and 131,840

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Solution

The third proportional to 87,376 and 131,840 is: 198,930.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,376 : 131,840 = 131,840 : x
  2. Step 2: Convert to fraction form
    87,376/131,840 = 131,840/x
  3. Step 3: Cross multiply
    87,376x = 131,840 × 131,840
  4. Step 4: Simplify right side
    87,376x = 17,381,785,600
  5. Step 5: Solve for x
    x = 17,381,785,600/87,376
  6. Step 6: Final answer
    x = 198,930.89

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.