Home / 136,403.91-188,246.85-82,691.19

Finding the Fourth Proportional to 136,403.91, 188,246.85 and 82,691.19

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Solution

The fourth proportional to 136,403.91, 188,246.85 and 82,691.19 is: 114,119.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,403.91 : 188,246.85 = 82,691.19 : x
  2. Step 2: Convert to fraction form
    136,403.91/188,246.85 = 82,691.19/x
  3. Step 3: Cross multiply
    136,403.91x = 188,246.85 × 82,691.19
  4. Step 4: Simplify right side
    136,403.91x = 15,566,356,040.25
  5. Step 5: Solve for x
    x = 15,566,356,040.25/136,403.91
  6. Step 6: Final answer
    x = 114,119.57

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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.