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Finding the Third Proportional to 81,140 and 127,486

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Solution

The third proportional to 81,140 and 127,486 is: 200,304.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,140 : 127,486 = 127,486 : x
  2. Step 2: Convert to fraction form
    81,140/127,486 = 127,486/x
  3. Step 3: Cross multiply
    81,140x = 127,486 × 127,486
  4. Step 4: Simplify right side
    81,140x = 16,252,680,196
  5. Step 5: Solve for x
    x = 16,252,680,196/81,140
  6. Step 6: Final answer
    x = 200,304.17

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.