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Finding the Third Proportional to 63,660 and 138,392

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Solution

The third proportional to 63,660 and 138,392 is: 300,853.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,660 : 138,392 = 138,392 : x
  2. Step 2: Convert to fraction form
    63,660/138,392 = 138,392/x
  3. Step 3: Cross multiply
    63,660x = 138,392 × 138,392
  4. Step 4: Simplify right side
    63,660x = 19,152,345,664
  5. Step 5: Solve for x
    x = 19,152,345,664/63,660
  6. Step 6: Final answer
    x = 300,853.69

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.