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Finding the Third Proportional to 82,743 and 127,859

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Solution

The third proportional to 82,743 and 127,859 is: 197,574.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,743 : 127,859 = 127,859 : x
  2. Step 2: Convert to fraction form
    82,743/127,859 = 127,859/x
  3. Step 3: Cross multiply
    82,743x = 127,859 × 127,859
  4. Step 4: Simplify right side
    82,743x = 16,347,923,881
  5. Step 5: Solve for x
    x = 16,347,923,881/82,743
  6. Step 6: Final answer
    x = 197,574.71

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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.