Home / 99,481.20-149,066.28-69,517.68

Finding the Fourth Proportional to 99,481.20, 149,066.28 and 69,517.68

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Solution

The fourth proportional to 99,481.20, 149,066.28 and 69,517.68 is: 104,167.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,481.20 : 149,066.28 = 69,517.68 : x
  2. Step 2: Convert to fraction form
    99,481.20/149,066.28 = 69,517.68/x
  3. Step 3: Cross multiply
    99,481.20x = 149,066.28 × 69,517.68
  4. Step 4: Simplify right side
    99,481.20x = 10,362,741,951.83
  5. Step 5: Solve for x
    x = 10,362,741,951.83/99,481.20
  6. Step 6: Final answer
    x = 104,167.84

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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.