Home / 209,105.49-288,566.78-113,612.97

Finding the Fourth Proportional to 209,105.49, 288,566.78 and 113,612.97

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Solution

The fourth proportional to 209,105.49, 288,566.78 and 113,612.97 is: 156,786.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,105.49 : 288,566.78 = 113,612.97 : x
  2. Step 2: Convert to fraction form
    209,105.49/288,566.78 = 113,612.97/x
  3. Step 3: Cross multiply
    209,105.49x = 288,566.78 × 113,612.97
  4. Step 4: Simplify right side
    209,105.49x = 32,784,928,351.07
  5. Step 5: Solve for x
    x = 32,784,928,351.07/209,105.49
  6. Step 6: Final answer
    x = 156,786.55

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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.