Home / 205,663.20-308,519.44-72,515.92

Finding the Fourth Proportional to 205,663.20, 308,519.44 and 72,515.92

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Solution

The fourth proportional to 205,663.20, 308,519.44 and 72,515.92 is: 108,782.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,663.20 : 308,519.44 = 72,515.92 : x
  2. Step 2: Convert to fraction form
    205,663.20/308,519.44 = 72,515.92/x
  3. Step 3: Cross multiply
    205,663.20x = 308,519.44 × 72,515.92
  4. Step 4: Simplify right side
    205,663.20x = 22,372,571,029.48
  5. Step 5: Solve for x
    x = 22,372,571,029.48/205,663.20
  6. Step 6: Final answer
    x = 108,782.57

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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.