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Finding the Fourth Proportional to 100,474.29, 150,711.39 and 78,304.23

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Solution

The fourth proportional to 100,474.29, 150,711.39 and 78,304.23 is: 117,456.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,474.29 : 150,711.39 = 78,304.23 : x
  2. Step 2: Convert to fraction form
    100,474.29/150,711.39 = 78,304.23/x
  3. Step 3: Cross multiply
    100,474.29x = 150,711.39 × 78,304.23
  4. Step 4: Simplify right side
    100,474.29x = 11,801,339,346.18
  5. Step 5: Solve for x
    x = 11,801,339,346.18/100,474.29
  6. Step 6: Final answer
    x = 117,456.31

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