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Finding the Fourth Proportional to 161,361.87, 222,676.20 and 89,740.35

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Solution

The fourth proportional to 161,361.87, 222,676.20 and 89,740.35 is: 123,839.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,361.87 : 222,676.20 = 89,740.35 : x
  2. Step 2: Convert to fraction form
    161,361.87/222,676.20 = 89,740.35/x
  3. Step 3: Cross multiply
    161,361.87x = 222,676.20 × 89,740.35
  4. Step 4: Simplify right side
    161,361.87x = 19,983,040,124.67
  5. Step 5: Solve for x
    x = 19,983,040,124.67/161,361.87
  6. Step 6: Final answer
    x = 123,839.91

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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.