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Finding the Fourth Proportional to 126,144,003.20, 189,216,004.80 and 126,144,003.20

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Solution

The fourth proportional to 126,144,003.20, 189,216,004.80 and 126,144,003.20 is: 189,216,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,144,003.20 : 189,216,004.80 = 126,144,003.20 : x
  2. Step 2: Convert to fraction form
    126,144,003.20/189,216,004.80 = 126,144,003.20/x
  3. Step 3: Cross multiply
    126,144,003.20x = 189,216,004.80 × 126,144,003.20
  4. Step 4: Simplify right side
    126,144,003.20x = 23,868,464,314,982,416
  5. Step 5: Solve for x
    x = 23,868,464,314,982,416/126,144,003.20
  6. Step 6: Final answer
    x = 189,216,004.80

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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.