Home / 209,120.81-288,587.61-113,627.88

Finding the Fourth Proportional to 209,120.81, 288,587.61 and 113,627.88

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Solution

The fourth proportional to 209,120.81, 288,587.61 and 113,627.88 is: 156,806.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,120.81 : 288,587.61 = 113,627.88 : x
  2. Step 2: Convert to fraction form
    209,120.81/288,587.61 = 113,627.88/x
  3. Step 3: Cross multiply
    209,120.81x = 288,587.61 × 113,627.88
  4. Step 4: Simplify right side
    209,120.81x = 32,791,598,318.57
  5. Step 5: Solve for x
    x = 32,791,598,318.57/209,120.81
  6. Step 6: Final answer
    x = 156,806.96

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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.