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Finding the Fourth Proportional to 138,622.26, 207,761.13 and 63,662.88

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Solution

The fourth proportional to 138,622.26, 207,761.13 and 63,662.88 is: 95,415.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,622.26 : 207,761.13 = 63,662.88 : x
  2. Step 2: Convert to fraction form
    138,622.26/207,761.13 = 63,662.88/x
  3. Step 3: Cross multiply
    138,622.26x = 207,761.13 × 63,662.88
  4. Step 4: Simplify right side
    138,622.26x = 13,226,671,887.85
  5. Step 5: Solve for x
    x = 13,226,671,887.85/138,622.26
  6. Step 6: Final answer
    x = 95,415.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.