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Finding the Fourth Proportional to 96.76, 133.64 and 90.73

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Solution

The fourth proportional to 96.76, 133.64 and 90.73 is: 125.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.76 : 133.64 = 90.73 : x
  2. Step 2: Convert to fraction form
    96.76/133.64 = 90.73/x
  3. Step 3: Cross multiply
    96.76x = 133.64 × 90.73
  4. Step 4: Simplify right side
    96.76x = 12,125.16
  5. Step 5: Solve for x
    x = 12,125.16/96.76
  6. Step 6: Final answer
    x = 125.31

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