Home / 129,215.16-193,785.30-50,311.80

Finding the Fourth Proportional to 129,215.16, 193,785.30 and 50,311.80

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Solution

The fourth proportional to 129,215.16, 193,785.30 and 50,311.80 is: 75,453.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,215.16 : 193,785.30 = 50,311.80 : x
  2. Step 2: Convert to fraction form
    129,215.16/193,785.30 = 50,311.80/x
  3. Step 3: Cross multiply
    129,215.16x = 193,785.30 × 50,311.80
  4. Step 4: Simplify right side
    129,215.16x = 9,749,687,256.54
  5. Step 5: Solve for x
    x = 9,749,687,256.54/129,215.16
  6. Step 6: Final answer
    x = 75,453.12

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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.