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Finding the Third Proportional to 63,648 and 138,000

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Solution

The third proportional to 63,648 and 138,000 is: 299,208.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,648 : 138,000 = 138,000 : x
  2. Step 2: Convert to fraction form
    63,648/138,000 = 138,000/x
  3. Step 3: Cross multiply
    63,648x = 138,000 × 138,000
  4. Step 4: Simplify right side
    63,648x = 19,044,000,000
  5. Step 5: Solve for x
    x = 19,044,000,000/63,648
  6. Step 6: Final answer
    x = 299,208.14

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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.