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Finding the Fourth Proportional to 140,639.75, 194,079 and 80,209.02

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Solution

The fourth proportional to 140,639.75, 194,079 and 80,209.02 is: 110,686.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,639.75 : 194,079 = 80,209.02 : x
  2. Step 2: Convert to fraction form
    140,639.75/194,079 = 80,209.02/x
  3. Step 3: Cross multiply
    140,639.75x = 194,079 × 80,209.02
  4. Step 4: Simplify right side
    140,639.75x = 15,566,886,392.58
  5. Step 5: Solve for x
    x = 15,566,886,392.58/140,639.75
  6. Step 6: Final answer
    x = 110,686.25

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