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Finding the Fourth Proportional to 99.28, 148.92 and 55.95

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Solution

The fourth proportional to 99.28, 148.92 and 55.95 is: 83.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.28 : 148.92 = 55.95 : x
  2. Step 2: Convert to fraction form
    99.28/148.92 = 55.95/x
  3. Step 3: Cross multiply
    99.28x = 148.92 × 55.95
  4. Step 4: Simplify right side
    99.28x = 8,332.07
  5. Step 5: Solve for x
    x = 8,332.07/99.28
  6. Step 6: Final answer
    x = 83.93

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