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Finding the Fourth Proportional to 97.76, 146.43 and 65.15

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Solution

The fourth proportional to 97.76, 146.43 and 65.15 is: 97.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.76 : 146.43 = 65.15 : x
  2. Step 2: Convert to fraction form
    97.76/146.43 = 65.15/x
  3. Step 3: Cross multiply
    97.76x = 146.43 × 65.15
  4. Step 4: Simplify right side
    97.76x = 9,540.28
  5. Step 5: Solve for x
    x = 9,540.28/97.76
  6. Step 6: Final answer
    x = 97.59

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