Home / 149,496.12-206,306.25-81,512.52

Finding the Fourth Proportional to 149,496.12, 206,306.25 and 81,512.52

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Solution

The fourth proportional to 149,496.12, 206,306.25 and 81,512.52 is: 112,488.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,496.12 : 206,306.25 = 81,512.52 : x
  2. Step 2: Convert to fraction form
    149,496.12/206,306.25 = 81,512.52/x
  3. Step 3: Cross multiply
    149,496.12x = 206,306.25 × 81,512.52
  4. Step 4: Simplify right side
    149,496.12x = 16,816,542,329.25
  5. Step 5: Solve for x
    x = 16,816,542,329.25/149,496.12
  6. Step 6: Final answer
    x = 112,488.15

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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.