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Finding the Fourth Proportional to 173.91, 260.85 and 77.73

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Solution

The fourth proportional to 173.91, 260.85 and 77.73 is: 116.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.91 : 260.85 = 77.73 : x
  2. Step 2: Convert to fraction form
    173.91/260.85 = 77.73/x
  3. Step 3: Cross multiply
    173.91x = 260.85 × 77.73
  4. Step 4: Simplify right side
    173.91x = 20,275.87
  5. Step 5: Solve for x
    x = 20,275.87/173.91
  6. Step 6: Final answer
    x = 116.59

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