Home / 123,375.40-170,257.86-66,786.76

Finding the Fourth Proportional to 123,375.40, 170,257.86 and 66,786.76

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Solution

The fourth proportional to 123,375.40, 170,257.86 and 66,786.76 is: 92,165.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,375.40 : 170,257.86 = 66,786.76 : x
  2. Step 2: Convert to fraction form
    123,375.40/170,257.86 = 66,786.76/x
  3. Step 3: Cross multiply
    123,375.40x = 170,257.86 × 66,786.76
  4. Step 4: Simplify right side
    123,375.40x = 11,370,970,833.93
  5. Step 5: Solve for x
    x = 11,370,970,833.93/123,375.40
  6. Step 6: Final answer
    x = 92,165.62

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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.