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Finding the Fourth Proportional to 199.06, 274.64 and 111.72

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Solution

The fourth proportional to 199.06, 274.64 and 111.72 is: 154.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.06 : 274.64 = 111.72 : x
  2. Step 2: Convert to fraction form
    199.06/274.64 = 111.72/x
  3. Step 3: Cross multiply
    199.06x = 274.64 × 111.72
  4. Step 4: Simplify right side
    199.06x = 30,682.78
  5. Step 5: Solve for x
    x = 30,682.78/199.06
  6. Step 6: Final answer
    x = 154.14

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