Home / 143,042.25-197,391.65-79,379.49

Finding the Fourth Proportional to 143,042.25, 197,391.65 and 79,379.49

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Solution

The fourth proportional to 143,042.25, 197,391.65 and 79,379.49 is: 109,540.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,042.25 : 197,391.65 = 79,379.49 : x
  2. Step 2: Convert to fraction form
    143,042.25/197,391.65 = 79,379.49/x
  3. Step 3: Cross multiply
    143,042.25x = 197,391.65 × 79,379.49
  4. Step 4: Simplify right side
    143,042.25x = 15,668,848,507.26
  5. Step 5: Solve for x
    x = 15,668,848,507.26/143,042.25
  6. Step 6: Final answer
    x = 109,540.00

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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.