Home / 143,006.73-197,378.01-82,587.21

Finding the Fourth Proportional to 143,006.73, 197,378.01 and 82,587.21

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Solution

The fourth proportional to 143,006.73, 197,378.01 and 82,587.21 is: 113,986.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,006.73 : 197,378.01 = 82,587.21 : x
  2. Step 2: Convert to fraction form
    143,006.73/197,378.01 = 82,587.21/x
  3. Step 3: Cross multiply
    143,006.73x = 197,378.01 × 82,587.21
  4. Step 4: Simplify right side
    143,006.73x = 16,300,899,161.25
  5. Step 5: Solve for x
    x = 16,300,899,161.25/143,006.73
  6. Step 6: Final answer
    x = 113,986.94

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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.