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Finding the Third Proportional to 64,676 and 138,802

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Solution

The third proportional to 64,676 and 138,802 is: 297,884.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,676 : 138,802 = 138,802 : x
  2. Step 2: Convert to fraction form
    64,676/138,802 = 138,802/x
  3. Step 3: Cross multiply
    64,676x = 138,802 × 138,802
  4. Step 4: Simplify right side
    64,676x = 19,265,995,204
  5. Step 5: Solve for x
    x = 19,265,995,204/64,676
  6. Step 6: Final answer
    x = 297,884.77

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.