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Finding the Third Proportional to 132,180 and 212,781

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Solution

The third proportional to 132,180 and 212,781 is: 342,531.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,180 : 212,781 = 212,781 : x
  2. Step 2: Convert to fraction form
    132,180/212,781 = 212,781/x
  3. Step 3: Cross multiply
    132,180x = 212,781 × 212,781
  4. Step 4: Simplify right side
    132,180x = 45,275,753,961
  5. Step 5: Solve for x
    x = 45,275,753,961/132,180
  6. Step 6: Final answer
    x = 342,531.05

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.