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Finding the Third Proportional to 81,506 and 124,679

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Solution

The third proportional to 81,506 and 124,679 is: 190,720.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,506 : 124,679 = 124,679 : x
  2. Step 2: Convert to fraction form
    81,506/124,679 = 124,679/x
  3. Step 3: Cross multiply
    81,506x = 124,679 × 124,679
  4. Step 4: Simplify right side
    81,506x = 15,544,853,041
  5. Step 5: Solve for x
    x = 15,544,853,041/81,506
  6. Step 6: Final answer
    x = 190,720.35

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.