Home / 143,021.25-197,369.33-79,369.29

Finding the Fourth Proportional to 143,021.25, 197,369.33 and 79,369.29

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Solution

The fourth proportional to 143,021.25, 197,369.33 and 79,369.29 is: 109,529.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,021.25 : 197,369.33 = 79,369.29 : x
  2. Step 2: Convert to fraction form
    143,021.25/197,369.33 = 79,369.29/x
  3. Step 3: Cross multiply
    143,021.25x = 197,369.33 × 79,369.29
  4. Step 4: Simplify right side
    143,021.25x = 15,665,063,193.03
  5. Step 5: Solve for x
    x = 15,665,063,193.03/143,021.25
  6. Step 6: Final answer
    x = 109,529.62

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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.