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Finding the Fourth Proportional to 99,704.80, 149,557.20 and 89,863.30

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Solution

The fourth proportional to 99,704.80, 149,557.20 and 89,863.30 is: 134,794.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,704.80 : 149,557.20 = 89,863.30 : x
  2. Step 2: Convert to fraction form
    99,704.80/149,557.20 = 89,863.30/x
  3. Step 3: Cross multiply
    99,704.80x = 149,557.20 × 89,863.30
  4. Step 4: Simplify right side
    99,704.80x = 13,439,703,530.76
  5. Step 5: Solve for x
    x = 13,439,703,530.76/99,704.80
  6. Step 6: Final answer
    x = 134,794.95

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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.