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Finding the Fourth Proportional to 129.03, 193.60 and 47.89

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Solution

The fourth proportional to 129.03, 193.60 and 47.89 is: 71.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129.03 : 193.60 = 47.89 : x
  2. Step 2: Convert to fraction form
    129.03/193.60 = 47.89/x
  3. Step 3: Cross multiply
    129.03x = 193.60 × 47.89
  4. Step 4: Simplify right side
    129.03x = 9,270.54
  5. Step 5: Solve for x
    x = 9,270.54/129.03
  6. Step 6: Final answer
    x = 71.85

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