Home / 143,919.18-198,663.18-108,212.88

Finding the Fourth Proportional to 143,919.18, 198,663.18 and 108,212.88

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Solution

The fourth proportional to 143,919.18, 198,663.18 and 108,212.88 is: 149,374.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,919.18 : 198,663.18 = 108,212.88 : x
  2. Step 2: Convert to fraction form
    143,919.18/198,663.18 = 108,212.88/x
  3. Step 3: Cross multiply
    143,919.18x = 198,663.18 × 108,212.88
  4. Step 4: Simplify right side
    143,919.18x = 21,497,914,857.76
  5. Step 5: Solve for x
    x = 21,497,914,857.76/143,919.18
  6. Step 6: Final answer
    x = 149,374.91

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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.