Home / 126,743.40-190,115.10-80,202.60

Finding the Fourth Proportional to 126,743.40, 190,115.10 and 80,202.60

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Solution

The fourth proportional to 126,743.40, 190,115.10 and 80,202.60 is: 120,303.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,743.40 : 190,115.10 = 80,202.60 : x
  2. Step 2: Convert to fraction form
    126,743.40/190,115.10 = 80,202.60/x
  3. Step 3: Cross multiply
    126,743.40x = 190,115.10 × 80,202.60
  4. Step 4: Simplify right side
    126,743.40x = 15,247,725,319.26
  5. Step 5: Solve for x
    x = 15,247,725,319.26/126,743.40
  6. Step 6: Final answer
    x = 120,303.90

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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.