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Finding the Fourth Proportional to 179,043.70, 268,241.55 and 85,342.90

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Solution

The fourth proportional to 179,043.70, 268,241.55 and 85,342.90 is: 127,859.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,043.70 : 268,241.55 = 85,342.90 : x
  2. Step 2: Convert to fraction form
    179,043.70/268,241.55 = 85,342.90/x
  3. Step 3: Cross multiply
    179,043.70x = 268,241.55 × 85,342.90
  4. Step 4: Simplify right side
    179,043.70x = 22,892,511,777.50
  5. Step 5: Solve for x
    x = 22,892,511,777.50/179,043.70
  6. Step 6: Final answer
    x = 127,859.91

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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.