Home / 138,829.10-191,570.55-82,229.54

Finding the Fourth Proportional to 138,829.10, 191,570.55 and 82,229.54

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Solution

The fourth proportional to 138,829.10, 191,570.55 and 82,229.54 is: 113,468.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,829.10 : 191,570.55 = 82,229.54 : x
  2. Step 2: Convert to fraction form
    138,829.10/191,570.55 = 82,229.54/x
  3. Step 3: Cross multiply
    138,829.10x = 191,570.55 × 82,229.54
  4. Step 4: Simplify right side
    138,829.10x = 15,752,758,204.05
  5. Step 5: Solve for x
    x = 15,752,758,204.05/138,829.10
  6. Step 6: Final answer
    x = 113,468.71

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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.