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Finding the Third Proportional to 78,451 and 120,032

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Solution

The third proportional to 78,451 and 120,032 is: 183,651.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,451 : 120,032 = 120,032 : x
  2. Step 2: Convert to fraction form
    78,451/120,032 = 120,032/x
  3. Step 3: Cross multiply
    78,451x = 120,032 × 120,032
  4. Step 4: Simplify right side
    78,451x = 14,407,681,024
  5. Step 5: Solve for x
    x = 14,407,681,024/78,451
  6. Step 6: Final answer
    x = 183,651.97

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.