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Finding the Third Proportional to 128,424.75 and 204,529.50

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Solution

The third proportional to 128,424.75 and 204,529.50 is: 325,734.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,424.75 : 204,529.50 = 204,529.50 : x
  2. Step 2: Convert to fraction form
    128,424.75/204,529.50 = 204,529.50/x
  3. Step 3: Cross multiply
    128,424.75x = 204,529.50 × 204,529.50
  4. Step 4: Simplify right side
    128,424.75x = 41,832,316,370.25
  5. Step 5: Solve for x
    x = 41,832,316,370.25/128,424.75
  6. Step 6: Final answer
    x = 325,734.07

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.