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Finding the Fourth Proportional to 158,841.78, 219,190.82 and 87,226.44

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Solution

The fourth proportional to 158,841.78, 219,190.82 and 87,226.44 is: 120,366.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,841.78 : 219,190.82 = 87,226.44 : x
  2. Step 2: Convert to fraction form
    158,841.78/219,190.82 = 87,226.44/x
  3. Step 3: Cross multiply
    158,841.78x = 219,190.82 × 87,226.44
  4. Step 4: Simplify right side
    158,841.78x = 19,119,234,473.15
  5. Step 5: Solve for x
    x = 19,119,234,473.15/158,841.78
  6. Step 6: Final answer
    x = 120,366.53

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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.