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Finding the Third Proportional to 85,312 and 133,817

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Solution

The third proportional to 85,312 and 133,817 is: 209,900.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,312 : 133,817 = 133,817 : x
  2. Step 2: Convert to fraction form
    85,312/133,817 = 133,817/x
  3. Step 3: Cross multiply
    85,312x = 133,817 × 133,817
  4. Step 4: Simplify right side
    85,312x = 17,906,989,489
  5. Step 5: Solve for x
    x = 17,906,989,489/85,312
  6. Step 6: Final answer
    x = 209,900.01

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.