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Finding the Third Proportional to 87,560 and 131,988

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Solution

The third proportional to 87,560 and 131,988 is: 198,958.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,560 : 131,988 = 131,988 : x
  2. Step 2: Convert to fraction form
    87,560/131,988 = 131,988/x
  3. Step 3: Cross multiply
    87,560x = 131,988 × 131,988
  4. Step 4: Simplify right side
    87,560x = 17,420,832,144
  5. Step 5: Solve for x
    x = 17,420,832,144/87,560
  6. Step 6: Final answer
    x = 198,958.80

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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.