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Finding the Third Proportional to 87,915.50 and 136,332.75

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Solution

The third proportional to 87,915.50 and 136,332.75 is: 211,414.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,915.50 : 136,332.75 = 136,332.75 : x
  2. Step 2: Convert to fraction form
    87,915.50/136,332.75 = 136,332.75/x
  3. Step 3: Cross multiply
    87,915.50x = 136,332.75 × 136,332.75
  4. Step 4: Simplify right side
    87,915.50x = 18,586,618,722.56
  5. Step 5: Solve for x
    x = 18,586,618,722.56/87,915.50
  6. Step 6: Final answer
    x = 211,414.58

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.