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Finding the Third Proportional to 81,888 and 118,368

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Solution

The third proportional to 81,888 and 118,368 is: 171,099.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,888 : 118,368 = 118,368 : x
  2. Step 2: Convert to fraction form
    81,888/118,368 = 118,368/x
  3. Step 3: Cross multiply
    81,888x = 118,368 × 118,368
  4. Step 4: Simplify right side
    81,888x = 14,010,983,424
  5. Step 5: Solve for x
    x = 14,010,983,424/81,888
  6. Step 6: Final answer
    x = 171,099.35

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.