Home / 143,029.32-197,380.50-79,377.36

Finding the Fourth Proportional to 143,029.32, 197,380.50 and 79,377.36

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Solution

The fourth proportional to 143,029.32, 197,380.50 and 79,377.36 is: 109,540.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,029.32 : 197,380.50 = 79,377.36 : x
  2. Step 2: Convert to fraction form
    143,029.32/197,380.50 = 79,377.36/x
  3. Step 3: Cross multiply
    143,029.32x = 197,380.50 × 79,377.36
  4. Step 4: Simplify right side
    143,029.32x = 15,667,543,005.48
  5. Step 5: Solve for x
    x = 15,667,543,005.48/143,029.32
  6. Step 6: Final answer
    x = 109,540.78

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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.