Home / 143,091.37-197,456.21-79,424.16

Finding the Fourth Proportional to 143,091.37, 197,456.21 and 79,424.16

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Solution

The fourth proportional to 143,091.37, 197,456.21 and 79,424.16 is: 109,599.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,091.37 : 197,456.21 = 79,424.16 : x
  2. Step 2: Convert to fraction form
    143,091.37/197,456.21 = 79,424.16/x
  3. Step 3: Cross multiply
    143,091.37x = 197,456.21 × 79,424.16
  4. Step 4: Simplify right side
    143,091.37x = 15,682,792,776.29
  5. Step 5: Solve for x
    x = 15,682,792,776.29/143,091.37
  6. Step 6: Final answer
    x = 109,599.85

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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.