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Finding the Third Proportional to 99,690.75 and 142,191.75

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Solution

The third proportional to 99,690.75 and 142,191.75 is: 202,812.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,690.75 : 142,191.75 = 142,191.75 : x
  2. Step 2: Convert to fraction form
    99,690.75/142,191.75 = 142,191.75/x
  3. Step 3: Cross multiply
    99,690.75x = 142,191.75 × 142,191.75
  4. Step 4: Simplify right side
    99,690.75x = 20,218,493,768.06
  5. Step 5: Solve for x
    x = 20,218,493,768.06/99,690.75
  6. Step 6: Final answer
    x = 202,812.13

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.