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Finding the Third Proportional to 81,737 and 126,615

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Solution

The third proportional to 81,737 and 126,615 is: 196,133.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,737 : 126,615 = 126,615 : x
  2. Step 2: Convert to fraction form
    81,737/126,615 = 126,615/x
  3. Step 3: Cross multiply
    81,737x = 126,615 × 126,615
  4. Step 4: Simplify right side
    81,737x = 16,031,358,225
  5. Step 5: Solve for x
    x = 16,031,358,225/81,737
  6. Step 6: Final answer
    x = 196,133.43

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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.