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Finding the Third Proportional to 85,817.50 and 133,953

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Solution

The third proportional to 85,817.50 and 133,953 is: 209,087.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,817.50 : 133,953 = 133,953 : x
  2. Step 2: Convert to fraction form
    85,817.50/133,953 = 133,953/x
  3. Step 3: Cross multiply
    85,817.50x = 133,953 × 133,953
  4. Step 4: Simplify right side
    85,817.50x = 17,943,406,209
  5. Step 5: Solve for x
    x = 17,943,406,209/85,817.50
  6. Step 6: Final answer
    x = 209,087.96

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.