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Finding the Fourth Proportional to 100,243.45, 138,335.96 and 54,923.15

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Solution

The fourth proportional to 100,243.45, 138,335.96 and 54,923.15 is: 75,793.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,243.45 : 138,335.96 = 54,923.15 : x
  2. Step 2: Convert to fraction form
    100,243.45/138,335.96 = 54,923.15/x
  3. Step 3: Cross multiply
    100,243.45x = 138,335.96 × 54,923.15
  4. Step 4: Simplify right side
    100,243.45x = 7,597,846,621.08
  5. Step 5: Solve for x
    x = 7,597,846,621.08/100,243.45
  6. Step 6: Final answer
    x = 75,793.94

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