Home / 87,086.41-129,906.67-84,171.03

Finding the Fourth Proportional to 87,086.41, 129,906.67 and 84,171.03

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Solution

The fourth proportional to 87,086.41, 129,906.67 and 84,171.03 is: 125,557.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,086.41 : 129,906.67 = 84,171.03 : x
  2. Step 2: Convert to fraction form
    87,086.41/129,906.67 = 84,171.03/x
  3. Step 3: Cross multiply
    87,086.41x = 129,906.67 × 84,171.03
  4. Step 4: Simplify right side
    87,086.41x = 10,934,378,217.77
  5. Step 5: Solve for x
    x = 10,934,378,217.77/87,086.41
  6. Step 6: Final answer
    x = 125,557.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.