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Finding the Third Proportional to 120,387.38 and 186,666.75

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Solution

The third proportional to 120,387.38 and 186,666.75 is: 289,436.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,387.38 : 186,666.75 = 186,666.75 : x
  2. Step 2: Convert to fraction form
    120,387.38/186,666.75 = 186,666.75/x
  3. Step 3: Cross multiply
    120,387.38x = 186,666.75 × 186,666.75
  4. Step 4: Simplify right side
    120,387.38x = 34,844,475,555.56
  5. Step 5: Solve for x
    x = 34,844,475,555.56/120,387.38
  6. Step 6: Final answer
    x = 289,436.29

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.