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Finding the Fourth Proportional to 99,662,209.20, 149,493,313.80 and 45,914,497.20

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Solution

The fourth proportional to 99,662,209.20, 149,493,313.80 and 45,914,497.20 is: 68,871,745.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,662,209.20 : 149,493,313.80 = 45,914,497.20 : x
  2. Step 2: Convert to fraction form
    99,662,209.20/149,493,313.80 = 45,914,497.20/x
  3. Step 3: Cross multiply
    99,662,209.20x = 149,493,313.80 × 45,914,497.20
  4. Step 4: Simplify right side
    99,662,209.20x = 6,863,910,337,888,822
  5. Step 5: Solve for x
    x = 6,863,910,337,888,822/99,662,209.20
  6. Step 6: Final answer
    x = 68,871,745.80

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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.