Home / 142,786.35-197,046.32-79,125.21

Finding the Fourth Proportional to 142,786.35, 197,046.32 and 79,125.21

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Solution

The fourth proportional to 142,786.35, 197,046.32 and 79,125.21 is: 109,193.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,786.35 : 197,046.32 = 79,125.21 : x
  2. Step 2: Convert to fraction form
    142,786.35/197,046.32 = 79,125.21/x
  3. Step 3: Cross multiply
    142,786.35x = 197,046.32 × 79,125.21
  4. Step 4: Simplify right side
    142,786.35x = 15,591,330,662.31
  5. Step 5: Solve for x
    x = 15,591,330,662.31/142,786.35
  6. Step 6: Final answer
    x = 109,193.43

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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.