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Finding the Third Proportional to 81,055 and 121,258.50

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Solution

The third proportional to 81,055 and 121,258.50 is: 181,403.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,055 : 121,258.50 = 121,258.50 : x
  2. Step 2: Convert to fraction form
    81,055/121,258.50 = 121,258.50/x
  3. Step 3: Cross multiply
    81,055x = 121,258.50 × 121,258.50
  4. Step 4: Simplify right side
    81,055x = 14,703,623,822.25
  5. Step 5: Solve for x
    x = 14,703,623,822.25/81,055
  6. Step 6: Final answer
    x = 181,403.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.