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Finding the Fourth Proportional to 133,972,846.60, 200,959,269.90 and 128,304,142.60

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Solution

The fourth proportional to 133,972,846.60, 200,959,269.90 and 128,304,142.60 is: 192,456,213.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,972,846.60 : 200,959,269.90 = 128,304,142.60 : x
  2. Step 2: Convert to fraction form
    133,972,846.60/200,959,269.90 = 128,304,142.60/x
  3. Step 3: Cross multiply
    133,972,846.60x = 200,959,269.90 × 128,304,142.60
  4. Step 4: Simplify right side
    133,972,846.60x = 25,783,906,822,041,488
  5. Step 5: Solve for x
    x = 25,783,906,822,041,488/133,972,846.60
  6. Step 6: Final answer
    x = 192,456,213.90

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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.