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Finding the Fourth Proportional to 85,151.55, 127,754.69 and 25,993.20

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Solution

The fourth proportional to 85,151.55, 127,754.69 and 25,993.20 is: 38,998.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,151.55 : 127,754.69 = 25,993.20 : x
  2. Step 2: Convert to fraction form
    85,151.55/127,754.69 = 25,993.20/x
  3. Step 3: Cross multiply
    85,151.55x = 127,754.69 × 25,993.20
  4. Step 4: Simplify right side
    85,151.55x = 3,320,753,078.14
  5. Step 5: Solve for x
    x = 3,320,753,078.14/85,151.55
  6. Step 6: Final answer
    x = 38,998.15

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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.