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Finding the Fourth Proportional to 193.05, 289.78 and 101.72

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Solution

The fourth proportional to 193.05, 289.78 and 101.72 is: 152.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.05 : 289.78 = 101.72 : x
  2. Step 2: Convert to fraction form
    193.05/289.78 = 101.72/x
  3. Step 3: Cross multiply
    193.05x = 289.78 × 101.72
  4. Step 4: Simplify right side
    193.05x = 29,476.89
  5. Step 5: Solve for x
    x = 29,476.89/193.05
  6. Step 6: Final answer
    x = 152.69

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