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Finding the Third Proportional to 63,918 and 139,498

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Solution

The third proportional to 63,918 and 139,498 is: 304,447.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,918 : 139,498 = 139,498 : x
  2. Step 2: Convert to fraction form
    63,918/139,498 = 139,498/x
  3. Step 3: Cross multiply
    63,918x = 139,498 × 139,498
  4. Step 4: Simplify right side
    63,918x = 19,459,692,004
  5. Step 5: Solve for x
    x = 19,459,692,004/63,918
  6. Step 6: Final answer
    x = 304,447.76

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.