Home / 126,909.20-190,234.20-74,291.60

Finding the Fourth Proportional to 126,909.20, 190,234.20 and 74,291.60

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Solution

The fourth proportional to 126,909.20, 190,234.20 and 74,291.60 is: 111,361.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,909.20 : 190,234.20 = 74,291.60 : x
  2. Step 2: Convert to fraction form
    126,909.20/190,234.20 = 74,291.60/x
  3. Step 3: Cross multiply
    126,909.20x = 190,234.20 × 74,291.60
  4. Step 4: Simplify right side
    126,909.20x = 14,132,803,092.72
  5. Step 5: Solve for x
    x = 14,132,803,092.72/126,909.20
  6. Step 6: Final answer
    x = 111,361.53

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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.