Home / 209,439.66-289,025.42-113,946.78

Finding the Fourth Proportional to 209,439.66, 289,025.42 and 113,946.78

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Solution

The fourth proportional to 209,439.66, 289,025.42 and 113,946.78 is: 157,245.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,439.66 : 289,025.42 = 113,946.78 : x
  2. Step 2: Convert to fraction form
    209,439.66/289,025.42 = 113,946.78/x
  3. Step 3: Cross multiply
    209,439.66x = 289,025.42 × 113,946.78
  4. Step 4: Simplify right side
    209,439.66x = 32,933,515,377.41
  5. Step 5: Solve for x
    x = 32,933,515,377.41/209,439.66
  6. Step 6: Final answer
    x = 157,245.84

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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.