Home / 143,414.67-197,917.08-78,886.65

Finding the Fourth Proportional to 143,414.67, 197,917.08 and 78,886.65

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Solution

The fourth proportional to 143,414.67, 197,917.08 and 78,886.65 is: 108,866.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,414.67 : 197,917.08 = 78,886.65 : x
  2. Step 2: Convert to fraction form
    143,414.67/197,917.08 = 78,886.65/x
  3. Step 3: Cross multiply
    143,414.67x = 197,917.08 × 78,886.65
  4. Step 4: Simplify right side
    143,414.67x = 15,613,015,418.98
  5. Step 5: Solve for x
    x = 15,613,015,418.98/143,414.67
  6. Step 6: Final answer
    x = 108,866.24

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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.