Home / 129,169.14-178,340.34-115,514.82

Finding the Fourth Proportional to 129,169.14, 178,340.34 and 115,514.82

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Solution

The fourth proportional to 129,169.14, 178,340.34 and 115,514.82 is: 159,488.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,169.14 : 178,340.34 = 115,514.82 : x
  2. Step 2: Convert to fraction form
    129,169.14/178,340.34 = 115,514.82/x
  3. Step 3: Cross multiply
    129,169.14x = 178,340.34 × 115,514.82
  4. Step 4: Simplify right side
    129,169.14x = 20,600,952,273.84
  5. Step 5: Solve for x
    x = 20,600,952,273.84/129,169.14
  6. Step 6: Final answer
    x = 159,488.19

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1.5x scale

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.