Home / 143,377.70-197,856.04-78,846.39

Finding the Fourth Proportional to 143,377.70, 197,856.04 and 78,846.39

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Solution

The fourth proportional to 143,377.70, 197,856.04 and 78,846.39 is: 108,805.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,377.70 : 197,856.04 = 78,846.39 : x
  2. Step 2: Convert to fraction form
    143,377.70/197,856.04 = 78,846.39/x
  3. Step 3: Cross multiply
    143,377.70x = 197,856.04 × 78,846.39
  4. Step 4: Simplify right side
    143,377.70x = 15,600,234,493.70
  5. Step 5: Solve for x
    x = 15,600,234,493.70/143,377.70
  6. Step 6: Final answer
    x = 108,805.17

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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.