Home / 136,404.15-188,247.20-82,691.43

Finding the Fourth Proportional to 136,404.15, 188,247.20 and 82,691.43

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Solution

The fourth proportional to 136,404.15, 188,247.20 and 82,691.43 is: 114,119.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,404.15 : 188,247.20 = 82,691.43 : x
  2. Step 2: Convert to fraction form
    136,404.15/188,247.20 = 82,691.43/x
  3. Step 3: Cross multiply
    136,404.15x = 188,247.20 × 82,691.43
  4. Step 4: Simplify right side
    136,404.15x = 15,566,430,218.66
  5. Step 5: Solve for x
    x = 15,566,430,218.66/136,404.15
  6. Step 6: Final answer
    x = 114,119.91

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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.