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Finding the Third Proportional to 63,540 and 135,805

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Solution

The third proportional to 63,540 and 135,805 is: 290,258.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,540 : 135,805 = 135,805 : x
  2. Step 2: Convert to fraction form
    63,540/135,805 = 135,805/x
  3. Step 3: Cross multiply
    63,540x = 135,805 × 135,805
  4. Step 4: Simplify right side
    63,540x = 18,442,998,025
  5. Step 5: Solve for x
    x = 18,442,998,025/63,540
  6. Step 6: Final answer
    x = 290,258.07

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.