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Finding the Fourth Proportional to 114,978,589.05, 158,671,097.37 and 65,418,961.56

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Solution

The fourth proportional to 114,978,589.05, 158,671,097.37 and 65,418,961.56 is: 90,278,533.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,978,589.05 : 158,671,097.37 = 65,418,961.56 : x
  2. Step 2: Convert to fraction form
    114,978,589.05/158,671,097.37 = 65,418,961.56/x
  3. Step 3: Cross multiply
    114,978,589.05x = 158,671,097.37 × 65,418,961.56
  4. Step 4: Simplify right side
    114,978,589.05x = 10,380,098,419,531,048
  5. Step 5: Solve for x
    x = 10,380,098,419,531,048/114,978,589.05
  6. Step 6: Final answer
    x = 90,278,533.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.