Home / 129,360.38-178,517.52-71,995.37

Finding the Fourth Proportional to 129,360.38, 178,517.52 and 71,995.37

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Solution

The fourth proportional to 129,360.38, 178,517.52 and 71,995.37 is: 99,353.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,360.38 : 178,517.52 = 71,995.37 : x
  2. Step 2: Convert to fraction form
    129,360.38/178,517.52 = 71,995.37/x
  3. Step 3: Cross multiply
    129,360.38x = 178,517.52 × 71,995.37
  4. Step 4: Simplify right side
    129,360.38x = 12,852,434,011.29
  5. Step 5: Solve for x
    x = 12,852,434,011.29/129,360.38
  6. Step 6: Final answer
    x = 99,353.72

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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.