Home / 260,660.52-391,021.56-83,105.28

Finding the Fourth Proportional to 260,660.52, 391,021.56 and 83,105.28

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Solution

The fourth proportional to 260,660.52, 391,021.56 and 83,105.28 is: 124,667.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,660.52 : 391,021.56 = 83,105.28 : x
  2. Step 2: Convert to fraction form
    260,660.52/391,021.56 = 83,105.28/x
  3. Step 3: Cross multiply
    260,660.52x = 391,021.56 × 83,105.28
  4. Step 4: Simplify right side
    260,660.52x = 32,495,956,229.84
  5. Step 5: Solve for x
    x = 32,495,956,229.84/260,660.52
  6. Step 6: Final answer
    x = 124,667.73

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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.