Home / 87,085.41-129,905.18-84,170.03

Finding the Fourth Proportional to 87,085.41, 129,905.18 and 84,170.03

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Solution

The fourth proportional to 87,085.41, 129,905.18 and 84,170.03 is: 125,556.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,085.41 : 129,905.18 = 84,170.03 : x
  2. Step 2: Convert to fraction form
    87,085.41/129,905.18 = 84,170.03/x
  3. Step 3: Cross multiply
    87,085.41x = 129,905.18 × 84,170.03
  4. Step 4: Simplify right side
    87,085.41x = 10,934,121,827.38
  5. Step 5: Solve for x
    x = 10,934,121,827.38/87,085.41
  6. Step 6: Final answer
    x = 125,556.30

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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.