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Finding the Third Proportional to 81,334 and 121,522

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Solution

The third proportional to 81,334 and 121,522 is: 181,567.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,334 : 121,522 = 121,522 : x
  2. Step 2: Convert to fraction form
    81,334/121,522 = 121,522/x
  3. Step 3: Cross multiply
    81,334x = 121,522 × 121,522
  4. Step 4: Simplify right side
    81,334x = 14,767,596,484
  5. Step 5: Solve for x
    x = 14,767,596,484/81,334
  6. Step 6: Final answer
    x = 181,567.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.