Home / 203,910.53-305,984.27-83,979.55

Finding the Fourth Proportional to 203,910.53, 305,984.27 and 83,979.55

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Solution

The fourth proportional to 203,910.53, 305,984.27 and 83,979.55 is: 126,018.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,910.53 : 305,984.27 = 83,979.55 : x
  2. Step 2: Convert to fraction form
    203,910.53/305,984.27 = 83,979.55/x
  3. Step 3: Cross multiply
    203,910.53x = 305,984.27 × 83,979.55
  4. Step 4: Simplify right side
    203,910.53x = 25,696,420,746.67
  5. Step 5: Solve for x
    x = 25,696,420,746.67/203,910.53
  6. Step 6: Final answer
    x = 126,018.11

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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.