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Finding the Fourth Proportional to 138.44, 207.41 and 65.18

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Solution

The fourth proportional to 138.44, 207.41 and 65.18 is: 97.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138.44 : 207.41 = 65.18 : x
  2. Step 2: Convert to fraction form
    138.44/207.41 = 65.18/x
  3. Step 3: Cross multiply
    138.44x = 207.41 × 65.18
  4. Step 4: Simplify right side
    138.44x = 13,518.98
  5. Step 5: Solve for x
    x = 13,518.98/138.44
  6. Step 6: Final answer
    x = 97.65

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