Home / 87,687.40-131,540.70-84,922.60

Finding the Fourth Proportional to 87,687.40, 131,540.70 and 84,922.60

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Solution

The fourth proportional to 87,687.40, 131,540.70 and 84,922.60 is: 127,393.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,687.40 : 131,540.70 = 84,922.60 : x
  2. Step 2: Convert to fraction form
    87,687.40/131,540.70 = 84,922.60/x
  3. Step 3: Cross multiply
    87,687.40x = 131,540.70 × 84,922.60
  4. Step 4: Simplify right side
    87,687.40x = 11,170,778,249.82
  5. Step 5: Solve for x
    x = 11,170,778,249.82/87,687.40
  6. Step 6: Final answer
    x = 127,393.20

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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.