Home / 87,548.80-131,323.20-86,236.60

Finding the Fourth Proportional to 87,548.80, 131,323.20 and 86,236.60

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Solution

The fourth proportional to 87,548.80, 131,323.20 and 86,236.60 is: 129,354.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,548.80 : 131,323.20 = 86,236.60 : x
  2. Step 2: Convert to fraction form
    87,548.80/131,323.20 = 86,236.60/x
  3. Step 3: Cross multiply
    87,548.80x = 131,323.20 × 86,236.60
  4. Step 4: Simplify right side
    87,548.80x = 11,324,866,269.12
  5. Step 5: Solve for x
    x = 11,324,866,269.12/87,548.80
  6. Step 6: Final answer
    x = 129,354.90

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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.