Home / 205,620.03-308,219.78-79,210.76

Finding the Fourth Proportional to 205,620.03, 308,219.78 and 79,210.76

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Solution

The fourth proportional to 205,620.03, 308,219.78 and 79,210.76 is: 118,735.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,620.03 : 308,219.78 = 79,210.76 : x
  2. Step 2: Convert to fraction form
    205,620.03/308,219.78 = 79,210.76/x
  3. Step 3: Cross multiply
    205,620.03x = 308,219.78 × 79,210.76
  4. Step 4: Simplify right side
    205,620.03x = 24,414,321,083.68
  5. Step 5: Solve for x
    x = 24,414,321,083.68/205,620.03
  6. Step 6: Final answer
    x = 118,735.13

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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.