Home / 129,736.13-178,882.49-91,501.97

Finding the Fourth Proportional to 129,736.13, 178,882.49 and 91,501.97

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Solution

The fourth proportional to 129,736.13, 178,882.49 and 91,501.97 is: 126,164.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,736.13 : 178,882.49 = 91,501.97 : x
  2. Step 2: Convert to fraction form
    129,736.13/178,882.49 = 91,501.97/x
  3. Step 3: Cross multiply
    129,736.13x = 178,882.49 × 91,501.97
  4. Step 4: Simplify right side
    129,736.13x = 16,368,099,567.85
  5. Step 5: Solve for x
    x = 16,368,099,567.85/129,736.13
  6. Step 6: Final answer
    x = 126,164.55

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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.