Home / 143,351.29-197,833.89-79,688.80

Finding the Fourth Proportional to 143,351.29, 197,833.89 and 79,688.80

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Solution

The fourth proportional to 143,351.29, 197,833.89 and 79,688.80 is: 109,975.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,351.29 : 197,833.89 = 79,688.80 : x
  2. Step 2: Convert to fraction form
    143,351.29/197,833.89 = 79,688.80/x
  3. Step 3: Cross multiply
    143,351.29x = 197,833.89 × 79,688.80
  4. Step 4: Simplify right side
    143,351.29x = 15,765,145,293.43
  5. Step 5: Solve for x
    x = 15,765,145,293.43/143,351.29
  6. Step 6: Final answer
    x = 109,975.61

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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.