Home / 213,933.78-320,949.89-71,797.92

Finding the Fourth Proportional to 213,933.78, 320,949.89 and 71,797.92

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Solution

The fourth proportional to 213,933.78, 320,949.89 and 71,797.92 is: 107,713.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,933.78 : 320,949.89 = 71,797.92 : x
  2. Step 2: Convert to fraction form
    213,933.78/320,949.89 = 71,797.92/x
  3. Step 3: Cross multiply
    213,933.78x = 320,949.89 × 71,797.92
  4. Step 4: Simplify right side
    213,933.78x = 23,043,534,526.23
  5. Step 5: Solve for x
    x = 23,043,534,526.23/213,933.78
  6. Step 6: Final answer
    x = 107,713.40

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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.