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Finding the Fourth Proportional to 88.16, 132 and 82.88

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Solution

The fourth proportional to 88.16, 132 and 82.88 is: 124.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.16 : 132 = 82.88 : x
  2. Step 2: Convert to fraction form
    88.16/132 = 82.88/x
  3. Step 3: Cross multiply
    88.16x = 132 × 82.88
  4. Step 4: Simplify right side
    88.16x = 10,940.16
  5. Step 5: Solve for x
    x = 10,940.16/88.16
  6. Step 6: Final answer
    x = 124.09

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