Home / 87,219.20-130,982.40-67,545.60

Finding the Fourth Proportional to 87,219.20, 130,982.40 and 67,545.60

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Solution

The fourth proportional to 87,219.20, 130,982.40 and 67,545.60 is: 101,437.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,219.20 : 130,982.40 = 67,545.60 : x
  2. Step 2: Convert to fraction form
    87,219.20/130,982.40 = 67,545.60/x
  3. Step 3: Cross multiply
    87,219.20x = 130,982.40 × 67,545.60
  4. Step 4: Simplify right side
    87,219.20x = 8,847,284,797.44
  5. Step 5: Solve for x
    x = 8,847,284,797.44/87,219.20
  6. Step 6: Final answer
    x = 101,437.35

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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.