Home / 205,195.48-283,162.38-128,755.73

Finding the Fourth Proportional to 205,195.48, 283,162.38 and 128,755.73

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Solution

The fourth proportional to 205,195.48, 283,162.38 and 128,755.73 is: 177,678.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,195.48 : 283,162.38 = 128,755.73 : x
  2. Step 2: Convert to fraction form
    205,195.48/283,162.38 = 128,755.73/x
  3. Step 3: Cross multiply
    205,195.48x = 283,162.38 × 128,755.73
  4. Step 4: Simplify right side
    205,195.48x = 36,458,778,945.44
  5. Step 5: Solve for x
    x = 36,458,778,945.44/205,195.48
  6. Step 6: Final answer
    x = 177,678.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.