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Finding the Third Proportional to 78,392 and 119,430

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Solution

The third proportional to 78,392 and 119,430 is: 181,951.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,392 : 119,430 = 119,430 : x
  2. Step 2: Convert to fraction form
    78,392/119,430 = 119,430/x
  3. Step 3: Cross multiply
    78,392x = 119,430 × 119,430
  4. Step 4: Simplify right side
    78,392x = 14,263,524,900
  5. Step 5: Solve for x
    x = 14,263,524,900/78,392
  6. Step 6: Final answer
    x = 181,951.28

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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.