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Finding the Third Proportional to 69,139 and 106,949

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Solution

The third proportional to 69,139 and 106,949 is: 165,436.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,139 : 106,949 = 106,949 : x
  2. Step 2: Convert to fraction form
    69,139/106,949 = 106,949/x
  3. Step 3: Cross multiply
    69,139x = 106,949 × 106,949
  4. Step 4: Simplify right side
    69,139x = 11,438,088,601
  5. Step 5: Solve for x
    x = 11,438,088,601/69,139
  6. Step 6: Final answer
    x = 165,436.13

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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.