Home / 206,007.75-309,013.55-72,910.58

Finding the Fourth Proportional to 206,007.75, 309,013.55 and 72,910.58

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Solution

The fourth proportional to 206,007.75, 309,013.55 and 72,910.58 is: 109,366.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,007.75 : 309,013.55 = 72,910.58 : x
  2. Step 2: Convert to fraction form
    206,007.75/309,013.55 = 72,910.58/x
  3. Step 3: Cross multiply
    206,007.75x = 309,013.55 × 72,910.58
  4. Step 4: Simplify right side
    206,007.75x = 22,530,355,522.15
  5. Step 5: Solve for x
    x = 22,530,355,522.15/206,007.75
  6. Step 6: Final answer
    x = 109,366.54

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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.