Home / 119,178.87-164,493.05-82,436.78

Finding the Fourth Proportional to 119,178.87, 164,493.05 and 82,436.78

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Solution

The fourth proportional to 119,178.87, 164,493.05 and 82,436.78 is: 113,780.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,178.87 : 164,493.05 = 82,436.78 : x
  2. Step 2: Convert to fraction form
    119,178.87/164,493.05 = 82,436.78/x
  3. Step 3: Cross multiply
    119,178.87x = 164,493.05 × 82,436.78
  4. Step 4: Simplify right side
    119,178.87x = 13,560,276,139.73
  5. Step 5: Solve for x
    x = 13,560,276,139.73/119,178.87
  6. Step 6: Final answer
    x = 113,780.88

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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.