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Finding the Fourth Proportional to 94.77, 141.30 and 87.03

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Solution

The fourth proportional to 94.77, 141.30 and 87.03 is: 129.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.77 : 141.30 = 87.03 : x
  2. Step 2: Convert to fraction form
    94.77/141.30 = 87.03/x
  3. Step 3: Cross multiply
    94.77x = 141.30 × 87.03
  4. Step 4: Simplify right side
    94.77x = 12,297.34
  5. Step 5: Solve for x
    x = 12,297.34/94.77
  6. Step 6: Final answer
    x = 129.76

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