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Finding the Fourth Proportional to 129,814.50, 179,144.02 and 70,198.50

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Solution

The fourth proportional to 129,814.50, 179,144.02 and 70,198.50 is: 96,873.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,814.50 : 179,144.02 = 70,198.50 : x
  2. Step 2: Convert to fraction form
    129,814.50/179,144.02 = 70,198.50/x
  3. Step 3: Cross multiply
    129,814.50x = 179,144.02 × 70,198.50
  4. Step 4: Simplify right side
    129,814.50x = 12,575,641,487.97
  5. Step 5: Solve for x
    x = 12,575,641,487.97/129,814.50
  6. Step 6: Final answer
    x = 96,873.94

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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.