Home / 209,923.20-289,695.90-123,884.16

Finding the Fourth Proportional to 209,923.20, 289,695.90 and 123,884.16

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Solution

The fourth proportional to 209,923.20, 289,695.90 and 123,884.16 is: 170,961.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,923.20 : 289,695.90 = 123,884.16 : x
  2. Step 2: Convert to fraction form
    209,923.20/289,695.90 = 123,884.16/x
  3. Step 3: Cross multiply
    209,923.20x = 289,695.90 × 123,884.16
  4. Step 4: Simplify right side
    209,923.20x = 35,888,733,226.94
  5. Step 5: Solve for x
    x = 35,888,733,226.94/209,923.20
  6. Step 6: Final answer
    x = 170,961.25

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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.