Home / 89,155.12-123,046.68-55,174.55

Finding the Fourth Proportional to 89,155.12, 123,046.68 and 55,174.55

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Solution

The fourth proportional to 89,155.12, 123,046.68 and 55,174.55 is: 76,148.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,155.12 : 123,046.68 = 55,174.55 : x
  2. Step 2: Convert to fraction form
    89,155.12/123,046.68 = 55,174.55/x
  3. Step 3: Cross multiply
    89,155.12x = 123,046.68 × 55,174.55
  4. Step 4: Simplify right side
    89,155.12x = 6,789,045,197.99
  5. Step 5: Solve for x
    x = 6,789,045,197.99/89,155.12
  6. Step 6: Final answer
    x = 76,148.69

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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.