Home / 143,916.66-198,605.79-79,388.17

Finding the Fourth Proportional to 143,916.66, 198,605.79 and 79,388.17

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Solution

The fourth proportional to 143,916.66, 198,605.79 and 79,388.17 is: 109,556.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,916.66 : 198,605.79 = 79,388.17 : x
  2. Step 2: Convert to fraction form
    143,916.66/198,605.79 = 79,388.17/x
  3. Step 3: Cross multiply
    143,916.66x = 198,605.79 × 79,388.17
  4. Step 4: Simplify right side
    143,916.66x = 15,766,949,722.99
  5. Step 5: Solve for x
    x = 15,766,949,722.99/143,916.66
  6. Step 6: Final answer
    x = 109,556.11

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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.