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Finding the Fourth Proportional to 172,589.27, 258,919.20 and 72,749.48

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Solution

The fourth proportional to 172,589.27, 258,919.20 and 72,749.48 is: 109,139.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,589.27 : 258,919.20 = 72,749.48 : x
  2. Step 2: Convert to fraction form
    172,589.27/258,919.20 = 72,749.48/x
  3. Step 3: Cross multiply
    172,589.27x = 258,919.20 × 72,749.48
  4. Step 4: Simplify right side
    172,589.27x = 18,836,235,867.42
  5. Step 5: Solve for x
    x = 18,836,235,867.42/172,589.27
  6. Step 6: Final answer
    x = 109,139.09

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