Home / 126,035.70-188,834.85-81,639.60

Finding the Fourth Proportional to 126,035.70, 188,834.85 and 81,639.60

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Solution

The fourth proportional to 126,035.70, 188,834.85 and 81,639.60 is: 122,317.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,035.70 : 188,834.85 = 81,639.60 : x
  2. Step 2: Convert to fraction form
    126,035.70/188,834.85 = 81,639.60/x
  3. Step 3: Cross multiply
    126,035.70x = 188,834.85 × 81,639.60
  4. Step 4: Simplify right side
    126,035.70x = 15,416,401,620.06
  5. Step 5: Solve for x
    x = 15,416,401,620.06/126,035.70
  6. Step 6: Final answer
    x = 122,317.74

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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.