Home / 129,434.26-178,589.73-72,824.98

Finding the Fourth Proportional to 129,434.26, 178,589.73 and 72,824.98

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Solution

The fourth proportional to 129,434.26, 178,589.73 and 72,824.98 is: 100,481.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,434.26 : 178,589.73 = 72,824.98 : x
  2. Step 2: Convert to fraction form
    129,434.26/178,589.73 = 72,824.98/x
  3. Step 3: Cross multiply
    129,434.26x = 178,589.73 × 72,824.98
  4. Step 4: Simplify right side
    129,434.26x = 13,005,793,515.46
  5. Step 5: Solve for x
    x = 13,005,793,515.46/129,434.26
  6. Step 6: Final answer
    x = 100,481.85

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1.5x scale

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.