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Finding the Fourth Proportional to 126.83, 190.25 and 45.69

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Solution

The fourth proportional to 126.83, 190.25 and 45.69 is: 68.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.83 : 190.25 = 45.69 : x
  2. Step 2: Convert to fraction form
    126.83/190.25 = 45.69/x
  3. Step 3: Cross multiply
    126.83x = 190.25 × 45.69
  4. Step 4: Simplify right side
    126.83x = 8,692.29
  5. Step 5: Solve for x
    x = 8,692.29/126.83
  6. Step 6: Final answer
    x = 68.54

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