Home / 205,709.22-283,825.62-129,240.36

Finding the Fourth Proportional to 205,709.22, 283,825.62 and 129,240.36

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Solution

The fourth proportional to 205,709.22, 283,825.62 and 129,240.36 is: 178,318.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,709.22 : 283,825.62 = 129,240.36 : x
  2. Step 2: Convert to fraction form
    205,709.22/283,825.62 = 129,240.36/x
  3. Step 3: Cross multiply
    205,709.22x = 283,825.62 × 129,240.36
  4. Step 4: Simplify right side
    205,709.22x = 36,681,725,306.02
  5. Step 5: Solve for x
    x = 36,681,725,306.02/205,709.22
  6. Step 6: Final answer
    x = 178,318.33

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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.