Home / 149,311.26-206,042.40-81,327.92

Finding the Fourth Proportional to 149,311.26, 206,042.40 and 81,327.92

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Solution

The fourth proportional to 149,311.26, 206,042.40 and 81,327.92 is: 112,228.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,311.26 : 206,042.40 = 81,327.92 : x
  2. Step 2: Convert to fraction form
    149,311.26/206,042.40 = 81,327.92/x
  3. Step 3: Cross multiply
    149,311.26x = 206,042.40 × 81,327.92
  4. Step 4: Simplify right side
    149,311.26x = 16,756,998,793.60
  5. Step 5: Solve for x
    x = 16,756,998,793.60/149,311.26
  6. Step 6: Final answer
    x = 112,228.63

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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.