Home / 209,121.54-288,581.30-113,626.20

Finding the Fourth Proportional to 209,121.54, 288,581.30 and 113,626.20

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Solution

The fourth proportional to 209,121.54, 288,581.30 and 113,626.20 is: 156,800.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,121.54 : 288,581.30 = 113,626.20 : x
  2. Step 2: Convert to fraction form
    209,121.54/288,581.30 = 113,626.20/x
  3. Step 3: Cross multiply
    209,121.54x = 288,581.30 × 113,626.20
  4. Step 4: Simplify right side
    209,121.54x = 32,790,396,510.06
  5. Step 5: Solve for x
    x = 32,790,396,510.06/209,121.54
  6. Step 6: Final answer
    x = 156,800.66

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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.