Home / 136,834.45-188,961.96-129,379.61

Finding the Fourth Proportional to 136,834.45, 188,961.96 and 129,379.61

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Solution

The fourth proportional to 136,834.45, 188,961.96 and 129,379.61 is: 178,667.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,834.45 : 188,961.96 = 129,379.61 : x
  2. Step 2: Convert to fraction form
    136,834.45/188,961.96 = 129,379.61/x
  3. Step 3: Cross multiply
    136,834.45x = 188,961.96 × 129,379.61
  4. Step 4: Simplify right side
    136,834.45x = 24,447,825,647.21
  5. Step 5: Solve for x
    x = 24,447,825,647.21/136,834.45
  6. Step 6: Final answer
    x = 178,667.19

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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.