Home / 99,620.10-149,515.20-40,498.20

Finding the Fourth Proportional to 99,620.10, 149,515.20 and 40,498.20

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Solution

The fourth proportional to 99,620.10, 149,515.20 and 40,498.20 is: 60,781.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,620.10 : 149,515.20 = 40,498.20 : x
  2. Step 2: Convert to fraction form
    99,620.10/149,515.20 = 40,498.20/x
  3. Step 3: Cross multiply
    99,620.10x = 149,515.20 × 40,498.20
  4. Step 4: Simplify right side
    99,620.10x = 6,055,096,472.64
  5. Step 5: Solve for x
    x = 6,055,096,472.64/99,620.10
  6. Step 6: Final answer
    x = 60,781.88

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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.