Home / 213,371.03-320,104.20-80,252.43

Finding the Fourth Proportional to 213,371.03, 320,104.20 and 80,252.43

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Solution

The fourth proportional to 213,371.03, 320,104.20 and 80,252.43 is: 120,396.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,371.03 : 320,104.20 = 80,252.43 : x
  2. Step 2: Convert to fraction form
    213,371.03/320,104.20 = 80,252.43/x
  3. Step 3: Cross multiply
    213,371.03x = 320,104.20 × 80,252.43
  4. Step 4: Simplify right side
    213,371.03x = 25,689,139,501.94
  5. Step 5: Solve for x
    x = 25,689,139,501.94/213,371.03
  6. Step 6: Final answer
    x = 120,396.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.