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Finding the Fourth Proportional to 99,850.20, 149,753.70 and 43,690.20

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Solution

The fourth proportional to 99,850.20, 149,753.70 and 43,690.20 is: 65,525.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,850.20 : 149,753.70 = 43,690.20 : x
  2. Step 2: Convert to fraction form
    99,850.20/149,753.70 = 43,690.20/x
  3. Step 3: Cross multiply
    99,850.20x = 149,753.70 × 43,690.20
  4. Step 4: Simplify right side
    99,850.20x = 6,542,769,103.74
  5. Step 5: Solve for x
    x = 6,542,769,103.74/99,850.20
  6. Step 6: Final answer
    x = 65,525.85

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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.