Home / 85,081.28-126,912.48-82,165.73

Finding the Fourth Proportional to 85,081.28, 126,912.48 and 82,165.73

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Solution

The fourth proportional to 85,081.28, 126,912.48 and 82,165.73 is: 122,563.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,081.28 : 126,912.48 = 82,165.73 : x
  2. Step 2: Convert to fraction form
    85,081.28/126,912.48 = 82,165.73/x
  3. Step 3: Cross multiply
    85,081.28x = 126,912.48 × 82,165.73
  4. Step 4: Simplify right side
    85,081.28x = 10,427,855,930.75
  5. Step 5: Solve for x
    x = 10,427,855,930.75/85,081.28
  6. Step 6: Final answer
    x = 122,563.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.