Home / 143,042.06-197,391.39-79,379.30

Finding the Fourth Proportional to 143,042.06, 197,391.39 and 79,379.30

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Solution

The fourth proportional to 143,042.06, 197,391.39 and 79,379.30 is: 109,539.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,042.06 : 197,391.39 = 79,379.30 : x
  2. Step 2: Convert to fraction form
    143,042.06/197,391.39 = 79,379.30/x
  3. Step 3: Cross multiply
    143,042.06x = 197,391.39 × 79,379.30
  4. Step 4: Simplify right side
    143,042.06x = 15,668,790,364.23
  5. Step 5: Solve for x
    x = 15,668,790,364.23/143,042.06
  6. Step 6: Final answer
    x = 109,539.74

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1.5x scale

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.