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Finding the Third Proportional to 99,717.75 and 215,088.75

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Solution

The third proportional to 99,717.75 and 215,088.75 is: 463,941.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,717.75 : 215,088.75 = 215,088.75 : x
  2. Step 2: Convert to fraction form
    99,717.75/215,088.75 = 215,088.75/x
  3. Step 3: Cross multiply
    99,717.75x = 215,088.75 × 215,088.75
  4. Step 4: Simplify right side
    99,717.75x = 46,263,170,376.56
  5. Step 5: Solve for x
    x = 46,263,170,376.56/99,717.75
  6. Step 6: Final answer
    x = 463,941.18

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.