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Finding the Fourth Proportional to 129,785.50, 179,104.26 and 70,169.50

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Solution

The fourth proportional to 129,785.50, 179,104.26 and 70,169.50 is: 96,834.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,785.50 : 179,104.26 = 70,169.50 : x
  2. Step 2: Convert to fraction form
    129,785.50/179,104.26 = 70,169.50/x
  3. Step 3: Cross multiply
    129,785.50x = 179,104.26 × 70,169.50
  4. Step 4: Simplify right side
    129,785.50x = 12,567,656,372.07
  5. Step 5: Solve for x
    x = 12,567,656,372.07/129,785.50
  6. Step 6: Final answer
    x = 96,834.06

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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.