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Finding the Third Proportional to 77,772.75 and 117,372.75

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Solution

The third proportional to 77,772.75 and 117,372.75 is: 177,136.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,772.75 : 117,372.75 = 117,372.75 : x
  2. Step 2: Convert to fraction form
    77,772.75/117,372.75 = 117,372.75/x
  3. Step 3: Cross multiply
    77,772.75x = 117,372.75 × 117,372.75
  4. Step 4: Simplify right side
    77,772.75x = 13,776,362,442.56
  5. Step 5: Solve for x
    x = 13,776,362,442.56/77,772.75
  6. Step 6: Final answer
    x = 177,136.11

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.