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Finding the Fourth Proportional to 100.23, 149.62 and 92.71

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Solution

The fourth proportional to 100.23, 149.62 and 92.71 is: 138.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    100.23 : 149.62 = 92.71 : x
  2. Step 2: Convert to fraction form
    100.23/149.62 = 92.71/x
  3. Step 3: Cross multiply
    100.23x = 149.62 × 92.71
  4. Step 4: Simplify right side
    100.23x = 13,870.66
  5. Step 5: Solve for x
    x = 13,870.66/100.23
  6. Step 6: Final answer
    x = 138.39

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