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Finding the Fourth Proportional to 217.02, 299.47 and 123.76

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Solution

The fourth proportional to 217.02, 299.47 and 123.76 is: 170.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.02 : 299.47 = 123.76 : x
  2. Step 2: Convert to fraction form
    217.02/299.47 = 123.76/x
  3. Step 3: Cross multiply
    217.02x = 299.47 × 123.76
  4. Step 4: Simplify right side
    217.02x = 37,060.29
  5. Step 5: Solve for x
    x = 37,060.29/217.02
  6. Step 6: Final answer
    x = 170.77

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