Home / 142,786.20-197,046.54-79,125.24

Finding the Fourth Proportional to 142,786.20, 197,046.54 and 79,125.24

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Solution

The fourth proportional to 142,786.20, 197,046.54 and 79,125.24 is: 109,193.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,786.20 : 197,046.54 = 79,125.24 : x
  2. Step 2: Convert to fraction form
    142,786.20/197,046.54 = 79,125.24/x
  3. Step 3: Cross multiply
    142,786.20x = 197,046.54 × 79,125.24
  4. Step 4: Simplify right side
    142,786.20x = 15,591,354,768.67
  5. Step 5: Solve for x
    x = 15,591,354,768.67/142,786.20
  6. Step 6: Final answer
    x = 109,193.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.