Home / 143,693.24-198,294.92-79,161.20

Finding the Fourth Proportional to 143,693.24, 198,294.92 and 79,161.20

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Solution

The fourth proportional to 143,693.24, 198,294.92 and 79,161.20 is: 109,241.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,693.24 : 198,294.92 = 79,161.20 : x
  2. Step 2: Convert to fraction form
    143,693.24/198,294.92 = 79,161.20/x
  3. Step 3: Cross multiply
    143,693.24x = 198,294.92 × 79,161.20
  4. Step 4: Simplify right side
    143,693.24x = 15,697,262,433.82
  5. Step 5: Solve for x
    x = 15,697,262,433.82/143,693.24
  6. Step 6: Final answer
    x = 109,241.49

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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.