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Finding the Fourth Proportional to 138.13, 207.18 and 46.82

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Solution

The fourth proportional to 138.13, 207.18 and 46.82 is: 70.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138.13 : 207.18 = 46.82 : x
  2. Step 2: Convert to fraction form
    138.13/207.18 = 46.82/x
  3. Step 3: Cross multiply
    138.13x = 207.18 × 46.82
  4. Step 4: Simplify right side
    138.13x = 9,700.69
  5. Step 5: Solve for x
    x = 9,700.69/138.13
  6. Step 6: Final answer
    x = 70.23

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