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Finding the Third Proportional to 68,865.75 and 141,430.50

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Solution

The third proportional to 68,865.75 and 141,430.50 is: 290,457.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,865.75 : 141,430.50 = 141,430.50 : x
  2. Step 2: Convert to fraction form
    68,865.75/141,430.50 = 141,430.50/x
  3. Step 3: Cross multiply
    68,865.75x = 141,430.50 × 141,430.50
  4. Step 4: Simplify right side
    68,865.75x = 20,002,586,330.25
  5. Step 5: Solve for x
    x = 20,002,586,330.25/68,865.75
  6. Step 6: Final answer
    x = 290,457.69

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.