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Finding the Fourth Proportional to 84,153, 126,230.46 and 21,819.72

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Solution

The fourth proportional to 84,153, 126,230.46 and 21,819.72 is: 32,729.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,153 : 126,230.46 = 21,819.72 : x
  2. Step 2: Convert to fraction form
    84,153/126,230.46 = 21,819.72/x
  3. Step 3: Cross multiply
    84,153x = 126,230.46 × 21,819.72
  4. Step 4: Simplify right side
    84,153x = 2,754,313,292.67
  5. Step 5: Solve for x
    x = 2,754,313,292.67/84,153
  6. Step 6: Final answer
    x = 32,729.83

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1.5x scale

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.