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Finding the Fourth Proportional to 203,169.71, 280,378.12 and 121,581.85

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Solution

The fourth proportional to 203,169.71, 280,378.12 and 121,581.85 is: 167,785.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,169.71 : 280,378.12 = 121,581.85 : x
  2. Step 2: Convert to fraction form
    203,169.71/280,378.12 = 121,581.85/x
  3. Step 3: Cross multiply
    203,169.71x = 280,378.12 × 121,581.85
  4. Step 4: Simplify right side
    203,169.71x = 34,088,890,529.12
  5. Step 5: Solve for x
    x = 34,088,890,529.12/203,169.71
  6. Step 6: Final answer
    x = 167,785.30

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