Home / 143,091.75-197,456.73-79,424.54

Finding the Fourth Proportional to 143,091.75, 197,456.73 and 79,424.54

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Solution

The fourth proportional to 143,091.75, 197,456.73 and 79,424.54 is: 109,600.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,091.75 : 197,456.73 = 79,424.54 : x
  2. Step 2: Convert to fraction form
    143,091.75/197,456.73 = 79,424.54/x
  3. Step 3: Cross multiply
    143,091.75x = 197,456.73 × 79,424.54
  4. Step 4: Simplify right side
    143,091.75x = 15,682,908,962.87
  5. Step 5: Solve for x
    x = 15,682,908,962.87/143,091.75
  6. Step 6: Final answer
    x = 109,600.37

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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.