Home / 123,408.44-170,303.66-66,819.80

Finding the Fourth Proportional to 123,408.44, 170,303.66 and 66,819.80

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Solution

The fourth proportional to 123,408.44, 170,303.66 and 66,819.80 is: 92,211.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,408.44 : 170,303.66 = 66,819.80 : x
  2. Step 2: Convert to fraction form
    123,408.44/170,303.66 = 66,819.80/x
  3. Step 3: Cross multiply
    123,408.44x = 170,303.66 × 66,819.80
  4. Step 4: Simplify right side
    123,408.44x = 11,379,656,500.47
  5. Step 5: Solve for x
    x = 11,379,656,500.47/123,408.44
  6. Step 6: Final answer
    x = 92,211.33

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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.