Home / 72,135.14-108,198.66-19,540.76

Finding the Fourth Proportional to 72,135.14, 108,198.66 and 19,540.76

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Solution

The fourth proportional to 72,135.14, 108,198.66 and 19,540.76 is: 29,310.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,135.14 : 108,198.66 = 19,540.76 : x
  2. Step 2: Convert to fraction form
    72,135.14/108,198.66 = 19,540.76/x
  3. Step 3: Cross multiply
    72,135.14x = 108,198.66 × 19,540.76
  4. Step 4: Simplify right side
    72,135.14x = 2,114,284,047.38
  5. Step 5: Solve for x
    x = 2,114,284,047.38/72,135.14
  6. Step 6: Final answer
    x = 29,310.04

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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.