Home / 143,694.66-198,290.79-79,151.25

Finding the Fourth Proportional to 143,694.66, 198,290.79 and 79,151.25

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Solution

The fourth proportional to 143,694.66, 198,290.79 and 79,151.25 is: 109,224.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,694.66 : 198,290.79 = 79,151.25 : x
  2. Step 2: Convert to fraction form
    143,694.66/198,290.79 = 79,151.25/x
  3. Step 3: Cross multiply
    143,694.66x = 198,290.79 × 79,151.25
  4. Step 4: Simplify right side
    143,694.66x = 15,694,963,891.99
  5. Step 5: Solve for x
    x = 15,694,963,891.99/143,694.66
  6. Step 6: Final answer
    x = 109,224.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.