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Finding the Fourth Proportional to 84,944.14, 127,399.20 and 80,728.90

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Solution

The fourth proportional to 84,944.14, 127,399.20 and 80,728.90 is: 121,077.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,944.14 : 127,399.20 = 80,728.90 : x
  2. Step 2: Convert to fraction form
    84,944.14/127,399.20 = 80,728.90/x
  3. Step 3: Cross multiply
    84,944.14x = 127,399.20 × 80,728.90
  4. Step 4: Simplify right side
    84,944.14x = 10,284,797,276.88
  5. Step 5: Solve for x
    x = 10,284,797,276.88/84,944.14
  6. Step 6: Final answer
    x = 121,077.18

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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.