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Finding the Fourth Proportional to 196.08, 294.12 and 87.81

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Solution

The fourth proportional to 196.08, 294.12 and 87.81 is: 131.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.08 : 294.12 = 87.81 : x
  2. Step 2: Convert to fraction form
    196.08/294.12 = 87.81/x
  3. Step 3: Cross multiply
    196.08x = 294.12 × 87.81
  4. Step 4: Simplify right side
    196.08x = 25,826.68
  5. Step 5: Solve for x
    x = 25,826.68/196.08
  6. Step 6: Final answer
    x = 131.72

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