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Finding the Fourth Proportional to 87,169.97, 120,331.17 and 73,810.44

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Solution

The fourth proportional to 87,169.97, 120,331.17 and 73,810.44 is: 101,889.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,169.97 : 120,331.17 = 73,810.44 : x
  2. Step 2: Convert to fraction form
    87,169.97/120,331.17 = 73,810.44/x
  3. Step 3: Cross multiply
    87,169.97x = 120,331.17 × 73,810.44
  4. Step 4: Simplify right side
    87,169.97x = 8,881,696,603.41
  5. Step 5: Solve for x
    x = 8,881,696,603.41/87,169.97
  6. Step 6: Final answer
    x = 101,889.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.