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Finding the Third Proportional to 72,681 and 106,629

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Solution

The third proportional to 72,681 and 106,629 is: 156,433.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,681 : 106,629 = 106,629 : x
  2. Step 2: Convert to fraction form
    72,681/106,629 = 106,629/x
  3. Step 3: Cross multiply
    72,681x = 106,629 × 106,629
  4. Step 4: Simplify right side
    72,681x = 11,369,743,641
  5. Step 5: Solve for x
    x = 11,369,743,641/72,681
  6. Step 6: Final answer
    x = 156,433.51

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.