Home / 87,626.40-131,439.60-80,368.80

Finding the Fourth Proportional to 87,626.40, 131,439.60 and 80,368.80

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Solution

The fourth proportional to 87,626.40, 131,439.60 and 80,368.80 is: 120,553.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,626.40 : 131,439.60 = 80,368.80 : x
  2. Step 2: Convert to fraction form
    87,626.40/131,439.60 = 80,368.80/x
  3. Step 3: Cross multiply
    87,626.40x = 131,439.60 × 80,368.80
  4. Step 4: Simplify right side
    87,626.40x = 10,563,642,924.48
  5. Step 5: Solve for x
    x = 10,563,642,924.48/87,626.40
  6. Step 6: Final answer
    x = 120,553.20

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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.