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Finding the Fourth Proportional to 140,998.68, 194,577.66 and 87,273

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Solution

The fourth proportional to 140,998.68, 194,577.66 and 87,273 is: 120,436.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,998.68 : 194,577.66 = 87,273 : x
  2. Step 2: Convert to fraction form
    140,998.68/194,577.66 = 87,273/x
  3. Step 3: Cross multiply
    140,998.68x = 194,577.66 × 87,273
  4. Step 4: Simplify right side
    140,998.68x = 16,981,376,121.18
  5. Step 5: Solve for x
    x = 16,981,376,121.18/140,998.68
  6. Step 6: Final answer
    x = 120,436.42

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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.