Home / 8,112,139.60-12,168,209.40-2,129,112.40

Finding the Fourth Proportional to 8,112,139.60, 12,168,209.40 and 2,129,112.40

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Solution

The fourth proportional to 8,112,139.60, 12,168,209.40 and 2,129,112.40 is: 3,193,668.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112,139.60 : 12,168,209.40 = 2,129,112.40 : x
  2. Step 2: Convert to fraction form
    8,112,139.60/12,168,209.40 = 2,129,112.40/x
  3. Step 3: Cross multiply
    8,112,139.60x = 12,168,209.40 × 2,129,112.40
  4. Step 4: Simplify right side
    8,112,139.60x = 25,907,485,519,336.56
  5. Step 5: Solve for x
    x = 25,907,485,519,336.56/8,112,139.60
  6. Step 6: Final answer
    x = 3,193,668.60

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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.