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Finding the Third Proportional to 71,955 and 105,987

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Solution

The third proportional to 71,955 and 105,987 is: 156,114.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,955 : 105,987 = 105,987 : x
  2. Step 2: Convert to fraction form
    71,955/105,987 = 105,987/x
  3. Step 3: Cross multiply
    71,955x = 105,987 × 105,987
  4. Step 4: Simplify right side
    71,955x = 11,233,244,169
  5. Step 5: Solve for x
    x = 11,233,244,169/71,955
  6. Step 6: Final answer
    x = 156,114.85

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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.