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Finding the Fourth Proportional to 133.05, 183.86 and 100.25

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Solution

The fourth proportional to 133.05, 183.86 and 100.25 is: 138.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.05 : 183.86 = 100.25 : x
  2. Step 2: Convert to fraction form
    133.05/183.86 = 100.25/x
  3. Step 3: Cross multiply
    133.05x = 183.86 × 100.25
  4. Step 4: Simplify right side
    133.05x = 18,431.30
  5. Step 5: Solve for x
    x = 18,431.30/133.05
  6. Step 6: Final answer
    x = 138.53

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