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Finding the Fourth Proportional to 97.68, 146.58 and 83.28

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Solution

The fourth proportional to 97.68, 146.58 and 83.28 is: 124.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.68 : 146.58 = 83.28 : x
  2. Step 2: Convert to fraction form
    97.68/146.58 = 83.28/x
  3. Step 3: Cross multiply
    97.68x = 146.58 × 83.28
  4. Step 4: Simplify right side
    97.68x = 12,207.18
  5. Step 5: Solve for x
    x = 12,207.18/97.68
  6. Step 6: Final answer
    x = 124.97

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