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Finding the Fourth Proportional to 154.02, 230.82 and 99.90

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Solution

The fourth proportional to 154.02, 230.82 and 99.90 is: 149.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.02 : 230.82 = 99.90 : x
  2. Step 2: Convert to fraction form
    154.02/230.82 = 99.90/x
  3. Step 3: Cross multiply
    154.02x = 230.82 × 99.90
  4. Step 4: Simplify right side
    154.02x = 23,058.92
  5. Step 5: Solve for x
    x = 23,058.92/154.02
  6. Step 6: Final answer
    x = 149.71

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