Home / 202,015.82-278,783.76-111,375.11

Finding the Fourth Proportional to 202,015.82, 278,783.76 and 111,375.11

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Solution

The fourth proportional to 202,015.82, 278,783.76 and 111,375.11 is: 153,698.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,015.82 : 278,783.76 = 111,375.11 : x
  2. Step 2: Convert to fraction form
    202,015.82/278,783.76 = 111,375.11/x
  3. Step 3: Cross multiply
    202,015.82x = 278,783.76 × 111,375.11
  4. Step 4: Simplify right side
    202,015.82x = 31,049,570,542.29
  5. Step 5: Solve for x
    x = 31,049,570,542.29/202,015.82
  6. Step 6: Final answer
    x = 153,698.71

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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.