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Finding the Third Proportional to 128,587.50 and 197,862.75

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Solution

The third proportional to 128,587.50 and 197,862.75 is: 304,459.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,587.50 : 197,862.75 = 197,862.75 : x
  2. Step 2: Convert to fraction form
    128,587.50/197,862.75 = 197,862.75/x
  3. Step 3: Cross multiply
    128,587.50x = 197,862.75 × 197,862.75
  4. Step 4: Simplify right side
    128,587.50x = 39,149,667,837.56
  5. Step 5: Solve for x
    x = 39,149,667,837.56/128,587.50
  6. Step 6: Final answer
    x = 304,459.36

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.