Home / 12,100,131.20-18,150,196.80-10,980,387.20

Finding the Fourth Proportional to 12,100,131.20, 18,150,196.80 and 10,980,387.20

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Solution

The fourth proportional to 12,100,131.20, 18,150,196.80 and 10,980,387.20 is: 16,470,580.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,100,131.20 : 18,150,196.80 = 10,980,387.20 : x
  2. Step 2: Convert to fraction form
    12,100,131.20/18,150,196.80 = 10,980,387.20/x
  3. Step 3: Cross multiply
    12,100,131.20x = 18,150,196.80 × 10,980,387.20
  4. Step 4: Simplify right side
    12,100,131.20x = 199,296,188,620,200.97
  5. Step 5: Solve for x
    x = 199,296,188,620,200.97/12,100,131.20
  6. Step 6: Final answer
    x = 16,470,580.80

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Similar ratio
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1.5x scale

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.