Home / 214,109.92-321,063.54-79,129.72

Finding the Fourth Proportional to 214,109.92, 321,063.54 and 79,129.72

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Solution

The fourth proportional to 214,109.92, 321,063.54 and 79,129.72 is: 118,657.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,109.92 : 321,063.54 = 79,129.72 : x
  2. Step 2: Convert to fraction form
    214,109.92/321,063.54 = 79,129.72/x
  3. Step 3: Cross multiply
    214,109.92x = 321,063.54 × 79,129.72
  4. Step 4: Simplify right side
    214,109.92x = 25,405,668,022.41
  5. Step 5: Solve for x
    x = 25,405,668,022.41/214,109.92
  6. Step 6: Final answer
    x = 118,657.13

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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.