Home / 214,022.57-321,055.10-79,122

Finding the Fourth Proportional to 214,022.57, 321,055.10 and 79,122

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Solution

The fourth proportional to 214,022.57, 321,055.10 and 79,122 is: 118,690.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,022.57 : 321,055.10 = 79,122 : x
  2. Step 2: Convert to fraction form
    214,022.57/321,055.10 = 79,122/x
  3. Step 3: Cross multiply
    214,022.57x = 321,055.10 × 79,122
  4. Step 4: Simplify right side
    214,022.57x = 25,402,521,226.59
  5. Step 5: Solve for x
    x = 25,402,521,226.59/214,022.57
  6. Step 6: Final answer
    x = 118,690.85

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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.