Home / 85,115.18-127,670.34-22,785.68

Finding the Fourth Proportional to 85,115.18, 127,670.34 and 22,785.68

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Solution

The fourth proportional to 85,115.18, 127,670.34 and 22,785.68 is: 34,177.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,115.18 : 127,670.34 = 22,785.68 : x
  2. Step 2: Convert to fraction form
    85,115.18/127,670.34 = 22,785.68/x
  3. Step 3: Cross multiply
    85,115.18x = 127,670.34 × 22,785.68
  4. Step 4: Simplify right side
    85,115.18x = 2,909,055,512.73
  5. Step 5: Solve for x
    x = 2,909,055,512.73/85,115.18
  6. Step 6: Final answer
    x = 34,177.87

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1.5x scale

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.