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Finding the Fourth Proportional to 148.09, 221.86 and 66.73

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Solution

The fourth proportional to 148.09, 221.86 and 66.73 is: 99.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.09 : 221.86 = 66.73 : x
  2. Step 2: Convert to fraction form
    148.09/221.86 = 66.73/x
  3. Step 3: Cross multiply
    148.09x = 221.86 × 66.73
  4. Step 4: Simplify right side
    148.09x = 14,804.72
  5. Step 5: Solve for x
    x = 14,804.72/148.09
  6. Step 6: Final answer
    x = 99.97

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