Home / 129,972.76-194,919.45-55,091.50

Finding the Fourth Proportional to 129,972.76, 194,919.45 and 55,091.50

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Solution

The fourth proportional to 129,972.76, 194,919.45 and 55,091.50 is: 82,620.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,972.76 : 194,919.45 = 55,091.50 : x
  2. Step 2: Convert to fraction form
    129,972.76/194,919.45 = 55,091.50/x
  3. Step 3: Cross multiply
    129,972.76x = 194,919.45 × 55,091.50
  4. Step 4: Simplify right side
    129,972.76x = 10,738,404,879.68
  5. Step 5: Solve for x
    x = 10,738,404,879.68/129,972.76
  6. Step 6: Final answer
    x = 82,620.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.