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Finding the Fourth Proportional to 121.76, 182.67 and 111.76

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Solution

The fourth proportional to 121.76, 182.67 and 111.76 is: 167.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    121.76 : 182.67 = 111.76 : x
  2. Step 2: Convert to fraction form
    121.76/182.67 = 111.76/x
  3. Step 3: Cross multiply
    121.76x = 182.67 × 111.76
  4. Step 4: Simplify right side
    121.76x = 20,415.20
  5. Step 5: Solve for x
    x = 20,415.20/121.76
  6. Step 6: Final answer
    x = 167.67

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