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Finding the Fourth Proportional to 99,600.80, 137,449.13 and 54,278.80

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Solution

The fourth proportional to 99,600.80, 137,449.13 and 54,278.80 is: 74,904.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,600.80 : 137,449.13 = 54,278.80 : x
  2. Step 2: Convert to fraction form
    99,600.80/137,449.13 = 54,278.80/x
  3. Step 3: Cross multiply
    99,600.80x = 137,449.13 × 54,278.80
  4. Step 4: Simplify right side
    99,600.80x = 7,460,573,629.52
  5. Step 5: Solve for x
    x = 7,460,573,629.52/99,600.80
  6. Step 6: Final answer
    x = 74,904.75

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