Home / 129,622.70-194,434.05-80,949.80

Finding the Fourth Proportional to 129,622.70, 194,434.05 and 80,949.80

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Solution

The fourth proportional to 129,622.70, 194,434.05 and 80,949.80 is: 121,424.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,622.70 : 194,434.05 = 80,949.80 : x
  2. Step 2: Convert to fraction form
    129,622.70/194,434.05 = 80,949.80/x
  3. Step 3: Cross multiply
    129,622.70x = 194,434.05 × 80,949.80
  4. Step 4: Simplify right side
    129,622.70x = 15,739,397,460.69
  5. Step 5: Solve for x
    x = 15,739,397,460.69/129,622.70
  6. Step 6: Final answer
    x = 121,424.70

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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.