Home / 87,845.20-131,460.60-80,472.40

Finding the Fourth Proportional to 87,845.20, 131,460.60 and 80,472.40

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Solution

The fourth proportional to 87,845.20, 131,460.60 and 80,472.40 is: 120,427.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,845.20 : 131,460.60 = 80,472.40 : x
  2. Step 2: Convert to fraction form
    87,845.20/131,460.60 = 80,472.40/x
  3. Step 3: Cross multiply
    87,845.20x = 131,460.60 × 80,472.40
  4. Step 4: Simplify right side
    87,845.20x = 10,578,949,987.44
  5. Step 5: Solve for x
    x = 10,578,949,987.44/87,845.20
  6. Step 6: Final answer
    x = 120,427.18

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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.