Home / 143,722.29-198,336.72-79,192.43

Finding the Fourth Proportional to 143,722.29, 198,336.72 and 79,192.43

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Solution

The fourth proportional to 143,722.29, 198,336.72 and 79,192.43 is: 109,285.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,722.29 : 198,336.72 = 79,192.43 : x
  2. Step 2: Convert to fraction form
    143,722.29/198,336.72 = 79,192.43/x
  3. Step 3: Cross multiply
    143,722.29x = 198,336.72 × 79,192.43
  4. Step 4: Simplify right side
    143,722.29x = 15,706,765,823.35
  5. Step 5: Solve for x
    x = 15,706,765,823.35/143,722.29
  6. Step 6: Final answer
    x = 109,285.52

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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.