Home / 202,015.88-278,783.86-111,375.16

Finding the Fourth Proportional to 202,015.88, 278,783.86 and 111,375.16

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Solution

The fourth proportional to 202,015.88, 278,783.86 and 111,375.16 is: 153,698.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,015.88 : 278,783.86 = 111,375.16 : x
  2. Step 2: Convert to fraction form
    202,015.88/278,783.86 = 111,375.16/x
  3. Step 3: Cross multiply
    202,015.88x = 278,783.86 × 111,375.16
  4. Step 4: Simplify right side
    202,015.88x = 31,049,597,012.92
  5. Step 5: Solve for x
    x = 31,049,597,012.92/202,015.88
  6. Step 6: Final answer
    x = 153,698.79

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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.