Home / 205,453.20-308,173.32-121,786.68

Finding the Fourth Proportional to 205,453.20, 308,173.32 and 121,786.68

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Solution

The fourth proportional to 205,453.20, 308,173.32 and 121,786.68 is: 182,676.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,453.20 : 308,173.32 = 121,786.68 : x
  2. Step 2: Convert to fraction form
    205,453.20/308,173.32 = 121,786.68/x
  3. Step 3: Cross multiply
    205,453.20x = 308,173.32 × 121,786.68
  4. Step 4: Simplify right side
    205,453.20x = 37,531,405,507.38
  5. Step 5: Solve for x
    x = 37,531,405,507.38/205,453.20
  6. Step 6: Final answer
    x = 182,676.18

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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.