Home / 87,616.40-131,434.20-84,851.60

Finding the Fourth Proportional to 87,616.40, 131,434.20 and 84,851.60

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Solution

The fourth proportional to 87,616.40, 131,434.20 and 84,851.60 is: 127,286.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,616.40 : 131,434.20 = 84,851.60 : x
  2. Step 2: Convert to fraction form
    87,616.40/131,434.20 = 84,851.60/x
  3. Step 3: Cross multiply
    87,616.40x = 131,434.20 × 84,851.60
  4. Step 4: Simplify right side
    87,616.40x = 11,152,402,164.72
  5. Step 5: Solve for x
    x = 11,152,402,164.72/87,616.40
  6. Step 6: Final answer
    x = 127,286.70

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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.