Home / 143,578.27-198,130.25-79,034.94

Finding the Fourth Proportional to 143,578.27, 198,130.25 and 79,034.94

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Solution

The fourth proportional to 143,578.27, 198,130.25 and 79,034.94 is: 109,063.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,578.27 : 198,130.25 = 79,034.94 : x
  2. Step 2: Convert to fraction form
    143,578.27/198,130.25 = 79,034.94/x
  3. Step 3: Cross multiply
    143,578.27x = 198,130.25 × 79,034.94
  4. Step 4: Simplify right side
    143,578.27x = 15,659,212,618.52
  5. Step 5: Solve for x
    x = 15,659,212,618.52/143,578.27
  6. Step 6: Final answer
    x = 109,063.94

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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.