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Finding the Fourth Proportional to 99,605.52, 149,278.88 and 40,408.90

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Solution

The fourth proportional to 99,605.52, 149,278.88 and 40,408.90 is: 60,560.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,605.52 : 149,278.88 = 40,408.90 : x
  2. Step 2: Convert to fraction form
    99,605.52/149,278.88 = 40,408.90/x
  3. Step 3: Cross multiply
    99,605.52x = 149,278.88 × 40,408.90
  4. Step 4: Simplify right side
    99,605.52x = 6,032,195,061.86
  5. Step 5: Solve for x
    x = 6,032,195,061.86/99,605.52
  6. Step 6: Final answer
    x = 60,560.85

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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.