Home / 209,007.72-313,445.34-68,733.80

Finding the Fourth Proportional to 209,007.72, 313,445.34 and 68,733.80

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Solution

The fourth proportional to 209,007.72, 313,445.34 and 68,733.80 is: 103,078.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,007.72 : 313,445.34 = 68,733.80 : x
  2. Step 2: Convert to fraction form
    209,007.72/313,445.34 = 68,733.80/x
  3. Step 3: Cross multiply
    209,007.72x = 313,445.34 × 68,733.80
  4. Step 4: Simplify right side
    209,007.72x = 21,544,289,310.49
  5. Step 5: Solve for x
    x = 21,544,289,310.49/209,007.72
  6. Step 6: Final answer
    x = 103,078.92

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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.