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Finding the Fourth Proportional to 84,616.20, 126,924.30 and 80,728.20

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Solution

The fourth proportional to 84,616.20, 126,924.30 and 80,728.20 is: 121,092.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,616.20 : 126,924.30 = 80,728.20 : x
  2. Step 2: Convert to fraction form
    84,616.20/126,924.30 = 80,728.20/x
  3. Step 3: Cross multiply
    84,616.20x = 126,924.30 × 80,728.20
  4. Step 4: Simplify right side
    84,616.20x = 10,246,370,275.26
  5. Step 5: Solve for x
    x = 10,246,370,275.26/84,616.20
  6. Step 6: Final answer
    x = 121,092.30

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