Home / 205,365.20-308,093.70-72,249.80

Finding the Fourth Proportional to 205,365.20, 308,093.70 and 72,249.80

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Solution

The fourth proportional to 205,365.20, 308,093.70 and 72,249.80 is: 108,390.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,365.20 : 308,093.70 = 72,249.80 : x
  2. Step 2: Convert to fraction form
    205,365.20/308,093.70 = 72,249.80/x
  3. Step 3: Cross multiply
    205,365.20x = 308,093.70 × 72,249.80
  4. Step 4: Simplify right side
    205,365.20x = 22,259,708,206.26
  5. Step 5: Solve for x
    x = 22,259,708,206.26/205,365.20
  6. Step 6: Final answer
    x = 108,390.85

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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.