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Finding the Fourth Proportional to 18,146,719.20, 27,220,078.80 and 12,100,101.60

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Solution

The fourth proportional to 18,146,719.20, 27,220,078.80 and 12,100,101.60 is: 18,150,152.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,146,719.20 : 27,220,078.80 = 12,100,101.60 : x
  2. Step 2: Convert to fraction form
    18,146,719.20/27,220,078.80 = 12,100,101.60/x
  3. Step 3: Cross multiply
    18,146,719.20x = 27,220,078.80 × 12,100,101.60
  4. Step 4: Simplify right side
    18,146,719.20x = 329,365,719,040,006.06
  5. Step 5: Solve for x
    x = 329,365,719,040,006.06/18,146,719.20
  6. Step 6: Final answer
    x = 18,150,152.40

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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.