Home / 135,886.32-187,540.41-82,171.71

Finding the Fourth Proportional to 135,886.32, 187,540.41 and 82,171.71

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Solution

The fourth proportional to 135,886.32, 187,540.41 and 82,171.71 is: 113,407.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,886.32 : 187,540.41 = 82,171.71 : x
  2. Step 2: Convert to fraction form
    135,886.32/187,540.41 = 82,171.71/x
  3. Step 3: Cross multiply
    135,886.32x = 187,540.41 × 82,171.71
  4. Step 4: Simplify right side
    135,886.32x = 15,410,516,183.80
  5. Step 5: Solve for x
    x = 15,410,516,183.80/135,886.32
  6. Step 6: Final answer
    x = 113,407.41

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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.