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Finding the Third Proportional to 87,558 and 131,985

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Solution

The third proportional to 87,558 and 131,985 is: 198,954.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,558 : 131,985 = 131,985 : x
  2. Step 2: Convert to fraction form
    87,558/131,985 = 131,985/x
  3. Step 3: Cross multiply
    87,558x = 131,985 × 131,985
  4. Step 4: Simplify right side
    87,558x = 17,420,040,225
  5. Step 5: Solve for x
    x = 17,420,040,225/87,558
  6. Step 6: Final answer
    x = 198,954.30

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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.