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Finding the Third Proportional to 66,672 and 141,189.75

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Solution

The third proportional to 66,672 and 141,189.75 is: 298,994.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,672 : 141,189.75 = 141,189.75 : x
  2. Step 2: Convert to fraction form
    66,672/141,189.75 = 141,189.75/x
  3. Step 3: Cross multiply
    66,672x = 141,189.75 × 141,189.75
  4. Step 4: Simplify right side
    66,672x = 19,934,545,505.06
  5. Step 5: Solve for x
    x = 19,934,545,505.06/66,672
  6. Step 6: Final answer
    x = 298,994.26

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.