Home / 143,371.28-197,857.41-78,845.42

Finding the Fourth Proportional to 143,371.28, 197,857.41 and 78,845.42

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Solution

The fourth proportional to 143,371.28, 197,857.41 and 78,845.42 is: 108,809.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,371.28 : 197,857.41 = 78,845.42 : x
  2. Step 2: Convert to fraction form
    143,371.28/197,857.41 = 78,845.42/x
  3. Step 3: Cross multiply
    143,371.28x = 197,857.41 × 78,845.42
  4. Step 4: Simplify right side
    143,371.28x = 15,600,150,591.56
  5. Step 5: Solve for x
    x = 15,600,150,591.56/143,371.28
  6. Step 6: Final answer
    x = 108,809.45

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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.