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Finding the Fourth Proportional to 146.74, 202.75 and 128.29

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Solution

The fourth proportional to 146.74, 202.75 and 128.29 is: 177.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.74 : 202.75 = 128.29 : x
  2. Step 2: Convert to fraction form
    146.74/202.75 = 128.29/x
  3. Step 3: Cross multiply
    146.74x = 202.75 × 128.29
  4. Step 4: Simplify right side
    146.74x = 26,009.30
  5. Step 5: Solve for x
    x = 26,009.30/146.74
  6. Step 6: Final answer
    x = 177.25

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