Home / 214,043.40-320,834.70-80,872.20

Finding the Fourth Proportional to 214,043.40, 320,834.70 and 80,872.20

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Solution

The fourth proportional to 214,043.40, 320,834.70 and 80,872.20 is: 121,221.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,043.40 : 320,834.70 = 80,872.20 : x
  2. Step 2: Convert to fraction form
    214,043.40/320,834.70 = 80,872.20/x
  3. Step 3: Cross multiply
    214,043.40x = 320,834.70 × 80,872.20
  4. Step 4: Simplify right side
    214,043.40x = 25,946,608,025.34
  5. Step 5: Solve for x
    x = 25,946,608,025.34/214,043.40
  6. Step 6: Final answer
    x = 121,221.25

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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.