Home / 143,142.35-197,542.46-79,486.07

Finding the Fourth Proportional to 143,142.35, 197,542.46 and 79,486.07

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Solution

The fourth proportional to 143,142.35, 197,542.46 and 79,486.07 is: 109,694.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,142.35 : 197,542.46 = 79,486.07 : x
  2. Step 2: Convert to fraction form
    143,142.35/197,542.46 = 79,486.07/x
  3. Step 3: Cross multiply
    143,142.35x = 197,542.46 × 79,486.07
  4. Step 4: Simplify right side
    143,142.35x = 15,701,873,014.54
  5. Step 5: Solve for x
    x = 15,701,873,014.54/143,142.35
  6. Step 6: Final answer
    x = 109,694.12

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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.