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Finding the Third Proportional to 77,068 and 115,290

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Solution

The third proportional to 77,068 and 115,290 is: 172,468.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,068 : 115,290 = 115,290 : x
  2. Step 2: Convert to fraction form
    77,068/115,290 = 115,290/x
  3. Step 3: Cross multiply
    77,068x = 115,290 × 115,290
  4. Step 4: Simplify right side
    77,068x = 13,291,784,100
  5. Step 5: Solve for x
    x = 13,291,784,100/77,068
  6. Step 6: Final answer
    x = 172,468.26

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.