Home / 209,981.20-289,768.82-114,489.76

Finding the Fourth Proportional to 209,981.20, 289,768.82 and 114,489.76

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Solution

The fourth proportional to 209,981.20, 289,768.82 and 114,489.76 is: 157,993.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,981.20 : 289,768.82 = 114,489.76 : x
  2. Step 2: Convert to fraction form
    209,981.20/289,768.82 = 114,489.76/x
  3. Step 3: Cross multiply
    209,981.20x = 289,768.82 × 114,489.76
  4. Step 4: Simplify right side
    209,981.20x = 33,175,562,657.28
  5. Step 5: Solve for x
    x = 33,175,562,657.28/209,981.20
  6. Step 6: Final answer
    x = 157,993.01

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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.