Home / 149,418.27-206,191.19-81,433.78

Finding the Fourth Proportional to 149,418.27, 206,191.19 and 81,433.78

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Solution

The fourth proportional to 149,418.27, 206,191.19 and 81,433.78 is: 112,375.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,418.27 : 206,191.19 = 81,433.78 : x
  2. Step 2: Convert to fraction form
    149,418.27/206,191.19 = 81,433.78/x
  3. Step 3: Cross multiply
    149,418.27x = 206,191.19 × 81,433.78
  4. Step 4: Simplify right side
    149,418.27x = 16,790,926,973.44
  5. Step 5: Solve for x
    x = 16,790,926,973.44/149,418.27
  6. Step 6: Final answer
    x = 112,375.33

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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.