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Finding the Fourth Proportional to 143,570.05, 198,128.56 and 79,046.80

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Solution

The fourth proportional to 143,570.05, 198,128.56 and 79,046.80 is: 109,085.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,570.05 : 198,128.56 = 79,046.80 : x
  2. Step 2: Convert to fraction form
    143,570.05/198,128.56 = 79,046.80/x
  3. Step 3: Cross multiply
    143,570.05x = 198,128.56 × 79,046.80
  4. Step 4: Simplify right side
    143,570.05x = 15,661,428,656.61
  5. Step 5: Solve for x
    x = 15,661,428,656.61/143,570.05
  6. Step 6: Final answer
    x = 109,085.63

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