Home / 87,615.40-131,432.70-84,850.60

Finding the Fourth Proportional to 87,615.40, 131,432.70 and 84,850.60

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Solution

The fourth proportional to 87,615.40, 131,432.70 and 84,850.60 is: 127,285.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,615.40 : 131,432.70 = 84,850.60 : x
  2. Step 2: Convert to fraction form
    87,615.40/131,432.70 = 84,850.60/x
  3. Step 3: Cross multiply
    87,615.40x = 131,432.70 × 84,850.60
  4. Step 4: Simplify right side
    87,615.40x = 11,152,143,454.62
  5. Step 5: Solve for x
    x = 11,152,143,454.62/87,615.40
  6. Step 6: Final answer
    x = 127,285.20

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1.5x scale

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.