Home / 143,338.46-197,789.90-78,797.06

Finding the Fourth Proportional to 143,338.46, 197,789.90 and 78,797.06

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Solution

The fourth proportional to 143,338.46, 197,789.90 and 78,797.06 is: 108,730.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,338.46 : 197,789.90 = 78,797.06 : x
  2. Step 2: Convert to fraction form
    143,338.46/197,789.90 = 78,797.06/x
  3. Step 3: Cross multiply
    143,338.46x = 197,789.90 × 78,797.06
  4. Step 4: Simplify right side
    143,338.46x = 15,585,261,234.76
  5. Step 5: Solve for x
    x = 15,585,261,234.76/143,338.46
  6. Step 6: Final answer
    x = 108,730.49

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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.