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Finding the Third Proportional to 80,121 and 124,555

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Solution

The third proportional to 80,121 and 124,555 is: 193,631.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,121 : 124,555 = 124,555 : x
  2. Step 2: Convert to fraction form
    80,121/124,555 = 124,555/x
  3. Step 3: Cross multiply
    80,121x = 124,555 × 124,555
  4. Step 4: Simplify right side
    80,121x = 15,513,948,025
  5. Step 5: Solve for x
    x = 15,513,948,025/80,121
  6. Step 6: Final answer
    x = 193,631.48

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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.