Home / 136,891.38-188,908.08-76,462.86

Finding the Fourth Proportional to 136,891.38, 188,908.08 and 76,462.86

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Solution

The fourth proportional to 136,891.38, 188,908.08 and 76,462.86 is: 105,517.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,891.38 : 188,908.08 = 76,462.86 : x
  2. Step 2: Convert to fraction form
    136,891.38/188,908.08 = 76,462.86/x
  3. Step 3: Cross multiply
    136,891.38x = 188,908.08 × 76,462.86
  4. Step 4: Simplify right side
    136,891.38x = 14,444,452,073.91
  5. Step 5: Solve for x
    x = 14,444,452,073.91/136,891.38
  6. Step 6: Final answer
    x = 105,517.62

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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.