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Finding the Fourth Proportional to 120.62, 180.95 and 48.47

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Solution

The fourth proportional to 120.62, 180.95 and 48.47 is: 72.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    120.62 : 180.95 = 48.47 : x
  2. Step 2: Convert to fraction form
    120.62/180.95 = 48.47/x
  3. Step 3: Cross multiply
    120.62x = 180.95 × 48.47
  4. Step 4: Simplify right side
    120.62x = 8,770.65
  5. Step 5: Solve for x
    x = 8,770.65/120.62
  6. Step 6: Final answer
    x = 72.71

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