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Finding the Fourth Proportional to 132.97, 199.55 and 87.30

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Solution

The fourth proportional to 132.97, 199.55 and 87.30 is: 131.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.97 : 199.55 = 87.30 : x
  2. Step 2: Convert to fraction form
    132.97/199.55 = 87.30/x
  3. Step 3: Cross multiply
    132.97x = 199.55 × 87.30
  4. Step 4: Simplify right side
    132.97x = 17,420.72
  5. Step 5: Solve for x
    x = 17,420.72/132.97
  6. Step 6: Final answer
    x = 131.01

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