Home / 126,847.20-190,279.92-43,740

Finding the Fourth Proportional to 126,847.20, 190,279.92 and 43,740

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Solution

The fourth proportional to 126,847.20, 190,279.92 and 43,740 is: 65,613.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,847.20 : 190,279.92 = 43,740 : x
  2. Step 2: Convert to fraction form
    126,847.20/190,279.92 = 43,740/x
  3. Step 3: Cross multiply
    126,847.20x = 190,279.92 × 43,740
  4. Step 4: Simplify right side
    126,847.20x = 8,322,843,700.80
  5. Step 5: Solve for x
    x = 8,322,843,700.80/126,847.20
  6. Step 6: Final answer
    x = 65,613.14

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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.