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Finding the Third Proportional to 77,792 and 170,712

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Solution

The third proportional to 77,792 and 170,712 is: 374,621.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,792 : 170,712 = 170,712 : x
  2. Step 2: Convert to fraction form
    77,792/170,712 = 170,712/x
  3. Step 3: Cross multiply
    77,792x = 170,712 × 170,712
  4. Step 4: Simplify right side
    77,792x = 29,142,586,944
  5. Step 5: Solve for x
    x = 29,142,586,944/77,792
  6. Step 6: Final answer
    x = 374,621.90

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.