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Finding the Fourth Proportional to 99,793.28, 137,480.81 and 69,523.85

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Solution

The fourth proportional to 99,793.28, 137,480.81 and 69,523.85 is: 95,779.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,793.28 : 137,480.81 = 69,523.85 : x
  2. Step 2: Convert to fraction form
    99,793.28/137,480.81 = 69,523.85/x
  3. Step 3: Cross multiply
    99,793.28x = 137,480.81 × 69,523.85
  4. Step 4: Simplify right side
    99,793.28x = 9,558,195,208.40
  5. Step 5: Solve for x
    x = 9,558,195,208.40/99,793.28
  6. Step 6: Final answer
    x = 95,779.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.