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Finding the Third Proportional to 78,399 and 119,442

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Solution

The third proportional to 78,399 and 119,442 is: 181,971.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,399 : 119,442 = 119,442 : x
  2. Step 2: Convert to fraction form
    78,399/119,442 = 119,442/x
  3. Step 3: Cross multiply
    78,399x = 119,442 × 119,442
  4. Step 4: Simplify right side
    78,399x = 14,266,391,364
  5. Step 5: Solve for x
    x = 14,266,391,364/78,399
  6. Step 6: Final answer
    x = 181,971.60

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.