Home / 143,920.18-198,664.56-108,213.88

Finding the Fourth Proportional to 143,920.18, 198,664.56 and 108,213.88

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Solution

The fourth proportional to 143,920.18, 198,664.56 and 108,213.88 is: 149,376.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,920.18 : 198,664.56 = 108,213.88 : x
  2. Step 2: Convert to fraction form
    143,920.18/198,664.56 = 108,213.88/x
  3. Step 3: Cross multiply
    143,920.18x = 198,664.56 × 108,213.88
  4. Step 4: Simplify right side
    143,920.18x = 21,498,262,856.09
  5. Step 5: Solve for x
    x = 21,498,262,856.09/143,920.18
  6. Step 6: Final answer
    x = 149,376.29

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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.