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Finding the Third Proportional to 90,472 and 136,698

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Solution

The third proportional to 90,472 and 136,698 is: 206,542.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,472 : 136,698 = 136,698 : x
  2. Step 2: Convert to fraction form
    90,472/136,698 = 136,698/x
  3. Step 3: Cross multiply
    90,472x = 136,698 × 136,698
  4. Step 4: Simplify right side
    90,472x = 18,686,343,204
  5. Step 5: Solve for x
    x = 18,686,343,204/90,472
  6. Step 6: Final answer
    x = 206,542.83

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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.