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Finding the Third Proportional to 87,391 and 131,041

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Solution

The third proportional to 87,391 and 131,041 is: 196,493.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,391 : 131,041 = 131,041 : x
  2. Step 2: Convert to fraction form
    87,391/131,041 = 131,041/x
  3. Step 3: Cross multiply
    87,391x = 131,041 × 131,041
  4. Step 4: Simplify right side
    87,391x = 17,171,743,681
  5. Step 5: Solve for x
    x = 17,171,743,681/87,391
  6. Step 6: Final answer
    x = 196,493.27

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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.