Home / 149,399.10-206,164.76-81,414.62

Finding the Fourth Proportional to 149,399.10, 206,164.76 and 81,414.62

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Solution

The fourth proportional to 149,399.10, 206,164.76 and 81,414.62 is: 112,348.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,399.10 : 206,164.76 = 81,414.62 : x
  2. Step 2: Convert to fraction form
    149,399.10/206,164.76 = 81,414.62/x
  3. Step 3: Cross multiply
    149,399.10x = 206,164.76 × 81,414.62
  4. Step 4: Simplify right side
    149,399.10x = 16,784,825,507.85
  5. Step 5: Solve for x
    x = 16,784,825,507.85/149,399.10
  6. Step 6: Final answer
    x = 112,348.91

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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.