Home / 205,621.03-308,221.27-79,211.76

Finding the Fourth Proportional to 205,621.03, 308,221.27 and 79,211.76

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Solution

The fourth proportional to 205,621.03, 308,221.27 and 79,211.76 is: 118,736.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,621.03 : 308,221.27 = 79,211.76 : x
  2. Step 2: Convert to fraction form
    205,621.03/308,221.27 = 79,211.76/x
  3. Step 3: Cross multiply
    205,621.03x = 308,221.27 × 79,211.76
  4. Step 4: Simplify right side
    205,621.03x = 24,414,749,266.14
  5. Step 5: Solve for x
    x = 24,414,749,266.14/205,621.03
  6. Step 6: Final answer
    x = 118,736.64

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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.