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Finding the Fourth Proportional to 128.02, 176.48 and 96.97

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Solution

The fourth proportional to 128.02, 176.48 and 96.97 is: 133.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128.02 : 176.48 = 96.97 : x
  2. Step 2: Convert to fraction form
    128.02/176.48 = 96.97/x
  3. Step 3: Cross multiply
    128.02x = 176.48 × 96.97
  4. Step 4: Simplify right side
    128.02x = 17,112.78
  5. Step 5: Solve for x
    x = 17,112.78/128.02
  6. Step 6: Final answer
    x = 133.67

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