Home / 214,139.85-321,100.43-79,197.09

Finding the Fourth Proportional to 214,139.85, 321,100.43 and 79,197.09

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Solution

The fourth proportional to 214,139.85, 321,100.43 and 79,197.09 is: 118,755.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,139.85 : 321,100.43 = 79,197.09 : x
  2. Step 2: Convert to fraction form
    214,139.85/321,100.43 = 79,197.09/x
  3. Step 3: Cross multiply
    214,139.85x = 321,100.43 × 79,197.09
  4. Step 4: Simplify right side
    214,139.85x = 25,430,219,257.76
  5. Step 5: Solve for x
    x = 25,430,219,257.76/214,139.85
  6. Step 6: Final answer
    x = 118,755.19

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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.