Home / 214,021.32-321,053.22-79,120.74

Finding the Fourth Proportional to 214,021.32, 321,053.22 and 79,120.74

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Solution

The fourth proportional to 214,021.32, 321,053.22 and 79,120.74 is: 118,688.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,021.32 : 321,053.22 = 79,120.74 : x
  2. Step 2: Convert to fraction form
    214,021.32/321,053.22 = 79,120.74/x
  3. Step 3: Cross multiply
    214,021.32x = 321,053.22 × 79,120.74
  4. Step 4: Simplify right side
    214,021.32x = 25,401,969,549.73
  5. Step 5: Solve for x
    x = 25,401,969,549.73/214,021.32
  6. Step 6: Final answer
    x = 118,688.97

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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.