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Finding the Fourth Proportional to 139,233.80, 192,142.80 and 75,571.60

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Solution

The fourth proportional to 139,233.80, 192,142.80 and 75,571.60 is: 104,288.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,233.80 : 192,142.80 = 75,571.60 : x
  2. Step 2: Convert to fraction form
    139,233.80/192,142.80 = 75,571.60/x
  3. Step 3: Cross multiply
    139,233.80x = 192,142.80 × 75,571.60
  4. Step 4: Simplify right side
    139,233.80x = 14,520,538,824.48
  5. Step 5: Solve for x
    x = 14,520,538,824.48/139,233.80
  6. Step 6: Final answer
    x = 104,288.89

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