Home / 274,785.16-412,157.98-85,240.60

Finding the Fourth Proportional to 274,785.16, 412,157.98 and 85,240.60

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Solution

The fourth proportional to 274,785.16, 412,157.98 and 85,240.60 is: 127,854.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,785.16 : 412,157.98 = 85,240.60 : x
  2. Step 2: Convert to fraction form
    274,785.16/412,157.98 = 85,240.60/x
  3. Step 3: Cross multiply
    274,785.16x = 412,157.98 × 85,240.60
  4. Step 4: Simplify right side
    274,785.16x = 35,132,595,825.38
  5. Step 5: Solve for x
    x = 35,132,595,825.38/274,785.16
  6. Step 6: Final answer
    x = 127,854.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.