Home / 209,168.35-313,752.62-138,074.38

Finding the Fourth Proportional to 209,168.35, 313,752.62 and 138,074.38

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Solution

The fourth proportional to 209,168.35, 313,752.62 and 138,074.38 is: 207,111.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,168.35 : 313,752.62 = 138,074.38 : x
  2. Step 2: Convert to fraction form
    209,168.35/313,752.62 = 138,074.38/x
  3. Step 3: Cross multiply
    209,168.35x = 313,752.62 × 138,074.38
  4. Step 4: Simplify right side
    209,168.35x = 43,321,198,040.68
  5. Step 5: Solve for x
    x = 43,321,198,040.68/209,168.35
  6. Step 6: Final answer
    x = 207,111.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.