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Finding the Third Proportional to 87,374 and 131,891

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Solution

The third proportional to 87,374 and 131,891 is: 199,089.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,374 : 131,891 = 131,891 : x
  2. Step 2: Convert to fraction form
    87,374/131,891 = 131,891/x
  3. Step 3: Cross multiply
    87,374x = 131,891 × 131,891
  4. Step 4: Simplify right side
    87,374x = 17,395,235,881
  5. Step 5: Solve for x
    x = 17,395,235,881/87,374
  6. Step 6: Final answer
    x = 199,089.38

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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.