Home / 129,887.15-194,851.17-55,007.78

Finding the Fourth Proportional to 129,887.15, 194,851.17 and 55,007.78

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Solution

The fourth proportional to 129,887.15, 194,851.17 and 55,007.78 is: 82,520.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,887.15 : 194,851.17 = 55,007.78 : x
  2. Step 2: Convert to fraction form
    129,887.15/194,851.17 = 55,007.78/x
  3. Step 3: Cross multiply
    129,887.15x = 194,851.17 × 55,007.78
  4. Step 4: Simplify right side
    129,887.15x = 10,718,329,317.85
  5. Step 5: Solve for x
    x = 10,718,329,317.85/129,887.15
  6. Step 6: Final answer
    x = 82,520.32

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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.