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Finding the Fourth Proportional to 129,785.88, 179,104.51 and 70,169.88

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Solution

The fourth proportional to 129,785.88, 179,104.51 and 70,169.88 is: 96,834.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,785.88 : 179,104.51 = 70,169.88 : x
  2. Step 2: Convert to fraction form
    129,785.88/179,104.51 = 70,169.88/x
  3. Step 3: Cross multiply
    129,785.88x = 179,104.51 × 70,169.88
  4. Step 4: Simplify right side
    129,785.88x = 12,567,741,974.16
  5. Step 5: Solve for x
    x = 12,567,741,974.16/129,785.88
  6. Step 6: Final answer
    x = 96,834.43

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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.