Home / 214,179.48-321,309.78-86,105.67

Finding the Fourth Proportional to 214,179.48, 321,309.78 and 86,105.67

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Solution

The fourth proportional to 214,179.48, 321,309.78 and 86,105.67 is: 129,174.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,179.48 : 321,309.78 = 86,105.67 : x
  2. Step 2: Convert to fraction form
    214,179.48/321,309.78 = 86,105.67/x
  3. Step 3: Cross multiply
    214,179.48x = 321,309.78 × 86,105.67
  4. Step 4: Simplify right side
    214,179.48x = 27,666,593,884.45
  5. Step 5: Solve for x
    x = 27,666,593,884.45/214,179.48
  6. Step 6: Final answer
    x = 129,174.81

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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.