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Finding the Third Proportional to 77,981 and 117,526

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Solution

The third proportional to 77,981 and 117,526 is: 177,124.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,981 : 117,526 = 117,526 : x
  2. Step 2: Convert to fraction form
    77,981/117,526 = 117,526/x
  3. Step 3: Cross multiply
    77,981x = 117,526 × 117,526
  4. Step 4: Simplify right side
    77,981x = 13,812,360,676
  5. Step 5: Solve for x
    x = 13,812,360,676/77,981
  6. Step 6: Final answer
    x = 177,124.69

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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.