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Finding the Fourth Proportional to 12,100,459.20, 18,150,688.80 and 12,100,459.20

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Solution

The fourth proportional to 12,100,459.20, 18,150,688.80 and 12,100,459.20 is: 18,150,688.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,100,459.20 : 18,150,688.80 = 12,100,459.20 : x
  2. Step 2: Convert to fraction form
    12,100,459.20/18,150,688.80 = 12,100,459.20/x
  3. Step 3: Cross multiply
    12,100,459.20x = 18,150,688.80 × 12,100,459.20
  4. Step 4: Simplify right side
    12,100,459.20x = 219,631,669,276,296.97
  5. Step 5: Solve for x
    x = 219,631,669,276,296.97/12,100,459.20
  6. Step 6: Final answer
    x = 18,150,688.80

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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.