Home / 86,968.92-120,074.67-66,789.59

Finding the Fourth Proportional to 86,968.92, 120,074.67 and 66,789.59

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Solution

The fourth proportional to 86,968.92, 120,074.67 and 66,789.59 is: 92,213.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,968.92 : 120,074.67 = 66,789.59 : x
  2. Step 2: Convert to fraction form
    86,968.92/120,074.67 = 66,789.59/x
  3. Step 3: Cross multiply
    86,968.92x = 120,074.67 × 66,789.59
  4. Step 4: Simplify right side
    86,968.92x = 8,019,737,378.31
  5. Step 5: Solve for x
    x = 8,019,737,378.31/86,968.92
  6. Step 6: Final answer
    x = 92,213.83

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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.