Home / 87,699.40-131,549.10-80,441.80

Finding the Fourth Proportional to 87,699.40, 131,549.10 and 80,441.80

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Solution

The fourth proportional to 87,699.40, 131,549.10 and 80,441.80 is: 120,662.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,699.40 : 131,549.10 = 80,441.80 : x
  2. Step 2: Convert to fraction form
    87,699.40/131,549.10 = 80,441.80/x
  3. Step 3: Cross multiply
    87,699.40x = 131,549.10 × 80,441.80
  4. Step 4: Simplify right side
    87,699.40x = 10,582,046,392.38
  5. Step 5: Solve for x
    x = 10,582,046,392.38/87,699.40
  6. Step 6: Final answer
    x = 120,662.70

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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.