Home / 126,745.40-190,118.10-80,204.60

Finding the Fourth Proportional to 126,745.40, 190,118.10 and 80,204.60

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Solution

The fourth proportional to 126,745.40, 190,118.10 and 80,204.60 is: 120,306.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,745.40 : 190,118.10 = 80,204.60 : x
  2. Step 2: Convert to fraction form
    126,745.40/190,118.10 = 80,204.60/x
  3. Step 3: Cross multiply
    126,745.40x = 190,118.10 × 80,204.60
  4. Step 4: Simplify right side
    126,745.40x = 15,248,346,163.26
  5. Step 5: Solve for x
    x = 15,248,346,163.26/126,745.40
  6. Step 6: Final answer
    x = 120,306.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.