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Finding the Fourth Proportional to 139.05, 208.53 and 41.53

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Solution

The fourth proportional to 139.05, 208.53 and 41.53 is: 62.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139.05 : 208.53 = 41.53 : x
  2. Step 2: Convert to fraction form
    139.05/208.53 = 41.53/x
  3. Step 3: Cross multiply
    139.05x = 208.53 × 41.53
  4. Step 4: Simplify right side
    139.05x = 8,660.25
  5. Step 5: Solve for x
    x = 8,660.25/139.05
  6. Step 6: Final answer
    x = 62.28

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