Home / 143,795.96-198,447.09-79,265.11

Finding the Fourth Proportional to 143,795.96, 198,447.09 and 79,265.11

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Solution

The fourth proportional to 143,795.96, 198,447.09 and 79,265.11 is: 109,390.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,795.96 : 198,447.09 = 79,265.11 : x
  2. Step 2: Convert to fraction form
    143,795.96/198,447.09 = 79,265.11/x
  3. Step 3: Cross multiply
    143,795.96x = 198,447.09 × 79,265.11
  4. Step 4: Simplify right side
    143,795.96x = 15,729,929,661.56
  5. Step 5: Solve for x
    x = 15,729,929,661.56/143,795.96
  6. Step 6: Final answer
    x = 109,390.62

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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.