Home / 143,578.07-198,129.75-79,044.66

Finding the Fourth Proportional to 143,578.07, 198,129.75 and 79,044.66

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Solution

The fourth proportional to 143,578.07, 198,129.75 and 79,044.66 is: 109,077.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,578.07 : 198,129.75 = 79,044.66 : x
  2. Step 2: Convert to fraction form
    143,578.07/198,129.75 = 79,044.66/x
  3. Step 3: Cross multiply
    143,578.07x = 198,129.75 × 79,044.66
  4. Step 4: Simplify right side
    143,578.07x = 15,661,098,428.22
  5. Step 5: Solve for x
    x = 15,661,098,428.22/143,578.07
  6. Step 6: Final answer
    x = 109,077.23

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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.