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Finding the Fourth Proportional to 105,112.28, 145,028.70 and 67,437.56

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Solution

The fourth proportional to 105,112.28, 145,028.70 and 67,437.56 is: 93,046.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,112.28 : 145,028.70 = 67,437.56 : x
  2. Step 2: Convert to fraction form
    105,112.28/145,028.70 = 67,437.56/x
  3. Step 3: Cross multiply
    105,112.28x = 145,028.70 × 67,437.56
  4. Step 4: Simplify right side
    105,112.28x = 9,780,381,657.97
  5. Step 5: Solve for x
    x = 9,780,381,657.97/105,112.28
  6. Step 6: Final answer
    x = 93,046.99

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