Home / 101,778.32-140,450.28-57,063.44

Finding the Fourth Proportional to 101,778.32, 140,450.28 and 57,063.44

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Solution

The fourth proportional to 101,778.32, 140,450.28 and 57,063.44 is: 78,745.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,778.32 : 140,450.28 = 57,063.44 : x
  2. Step 2: Convert to fraction form
    101,778.32/140,450.28 = 57,063.44/x
  3. Step 3: Cross multiply
    101,778.32x = 140,450.28 × 57,063.44
  4. Step 4: Simplify right side
    101,778.32x = 8,014,576,125.76
  5. Step 5: Solve for x
    x = 8,014,576,125.76/101,778.32
  6. Step 6: Final answer
    x = 78,745.42

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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.