Home / 235,621.35-325,164.38-128,198.30

Finding the Fourth Proportional to 235,621.35, 325,164.38 and 128,198.30

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Solution

The fourth proportional to 235,621.35, 325,164.38 and 128,198.30 is: 176,917.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,621.35 : 325,164.38 = 128,198.30 : x
  2. Step 2: Convert to fraction form
    235,621.35/325,164.38 = 128,198.30/x
  3. Step 3: Cross multiply
    235,621.35x = 325,164.38 × 128,198.30
  4. Step 4: Simplify right side
    235,621.35x = 41,685,520,736.55
  5. Step 5: Solve for x
    x = 41,685,520,736.55/235,621.35
  6. Step 6: Final answer
    x = 176,917.42

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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.