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Finding the Fourth Proportional to 161,286.80, 241,872.60 and 56,109.20

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Solution

The fourth proportional to 161,286.80, 241,872.60 and 56,109.20 is: 84,143.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,286.80 : 241,872.60 = 56,109.20 : x
  2. Step 2: Convert to fraction form
    161,286.80/241,872.60 = 56,109.20/x
  3. Step 3: Cross multiply
    161,286.80x = 241,872.60 × 56,109.20
  4. Step 4: Simplify right side
    161,286.80x = 13,571,278,087.92
  5. Step 5: Solve for x
    x = 13,571,278,087.92/161,286.80
  6. Step 6: Final answer
    x = 84,143.76

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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.