Home / 99,350.10-149,025.15-80,687.70

Finding the Fourth Proportional to 99,350.10, 149,025.15 and 80,687.70

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Solution

The fourth proportional to 99,350.10, 149,025.15 and 80,687.70 is: 121,031.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,350.10 : 149,025.15 = 80,687.70 : x
  2. Step 2: Convert to fraction form
    99,350.10/149,025.15 = 80,687.70/x
  3. Step 3: Cross multiply
    99,350.10x = 149,025.15 × 80,687.70
  4. Step 4: Simplify right side
    99,350.10x = 12,024,496,595.66
  5. Step 5: Solve for x
    x = 12,024,496,595.66/99,350.10
  6. Step 6: Final answer
    x = 121,031.55

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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.