Home / 143,337.20-197,805.12-79,680.92

Finding the Fourth Proportional to 143,337.20, 197,805.12 and 79,680.92

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Solution

The fourth proportional to 143,337.20, 197,805.12 and 79,680.92 is: 109,959.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,337.20 : 197,805.12 = 79,680.92 : x
  2. Step 2: Convert to fraction form
    143,337.20/197,805.12 = 79,680.92/x
  3. Step 3: Cross multiply
    143,337.20x = 197,805.12 × 79,680.92
  4. Step 4: Simplify right side
    143,337.20x = 15,761,293,942.31
  5. Step 5: Solve for x
    x = 15,761,293,942.31/143,337.20
  6. Step 6: Final answer
    x = 109,959.55

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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.