Home / 143,899.34-198,578.25-79,374.47

Finding the Fourth Proportional to 143,899.34, 198,578.25 and 79,374.47

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Solution

The fourth proportional to 143,899.34, 198,578.25 and 79,374.47 is: 109,535.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,899.34 : 198,578.25 = 79,374.47 : x
  2. Step 2: Convert to fraction form
    143,899.34/198,578.25 = 79,374.47/x
  3. Step 3: Cross multiply
    143,899.34x = 198,578.25 × 79,374.47
  4. Step 4: Simplify right side
    143,899.34x = 15,762,042,354.39
  5. Step 5: Solve for x
    x = 15,762,042,354.39/143,899.34
  6. Step 6: Final answer
    x = 109,535.20

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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.