Home / 200,581.85-276,766.66-128,945.45

Finding the Fourth Proportional to 200,581.85, 276,766.66 and 128,945.45

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Solution

The fourth proportional to 200,581.85, 276,766.66 and 128,945.45 is: 177,921.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,581.85 : 276,766.66 = 128,945.45 : x
  2. Step 2: Convert to fraction form
    200,581.85/276,766.66 = 128,945.45/x
  3. Step 3: Cross multiply
    200,581.85x = 276,766.66 × 128,945.45
  4. Step 4: Simplify right side
    200,581.85x = 35,687,801,518.70
  5. Step 5: Solve for x
    x = 35,687,801,518.70/200,581.85
  6. Step 6: Final answer
    x = 177,921.39

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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.