Home / 213,826.80-320,811.45-71,686.14

Finding the Fourth Proportional to 213,826.80, 320,811.45 and 71,686.14

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Solution

The fourth proportional to 213,826.80, 320,811.45 and 71,686.14 is: 107,553.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,826.80 : 320,811.45 = 71,686.14 : x
  2. Step 2: Convert to fraction form
    213,826.80/320,811.45 = 71,686.14/x
  3. Step 3: Cross multiply
    213,826.80x = 320,811.45 × 71,686.14
  4. Step 4: Simplify right side
    213,826.80x = 22,997,734,518.30
  5. Step 5: Solve for x
    x = 22,997,734,518.30/213,826.80
  6. Step 6: Final answer
    x = 107,553.10

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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.