Home / 143,091.51-197,456.38-79,424.30

Finding the Fourth Proportional to 143,091.51, 197,456.38 and 79,424.30

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Solution

The fourth proportional to 143,091.51, 197,456.38 and 79,424.30 is: 109,600.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,091.51 : 197,456.38 = 79,424.30 : x
  2. Step 2: Convert to fraction form
    143,091.51/197,456.38 = 79,424.30/x
  3. Step 3: Cross multiply
    143,091.51x = 197,456.38 × 79,424.30
  4. Step 4: Simplify right side
    143,091.51x = 15,682,834,393.18
  5. Step 5: Solve for x
    x = 15,682,834,393.18/143,091.51
  6. Step 6: Final answer
    x = 109,600.03

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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.