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Finding the Fourth Proportional to 173.79, 260.82 and 77.67

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Solution

The fourth proportional to 173.79, 260.82 and 77.67 is: 116.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.79 : 260.82 = 77.67 : x
  2. Step 2: Convert to fraction form
    173.79/260.82 = 77.67/x
  3. Step 3: Cross multiply
    173.79x = 260.82 × 77.67
  4. Step 4: Simplify right side
    173.79x = 20,257.89
  5. Step 5: Solve for x
    x = 20,257.89/173.79
  6. Step 6: Final answer
    x = 116.57

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