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Finding the Fourth Proportional to 135.88, 203.75 and 54.63

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Solution

The fourth proportional to 135.88, 203.75 and 54.63 is: 81.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.88 : 203.75 = 54.63 : x
  2. Step 2: Convert to fraction form
    135.88/203.75 = 54.63/x
  3. Step 3: Cross multiply
    135.88x = 203.75 × 54.63
  4. Step 4: Simplify right side
    135.88x = 11,130.79
  5. Step 5: Solve for x
    x = 11,130.79/135.88
  6. Step 6: Final answer
    x = 81.91

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