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Finding the Third Proportional to 128,743.13 and 188,505.75

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Solution

The third proportional to 128,743.13 and 188,505.75 is: 276,010.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,743.13 : 188,505.75 = 188,505.75 : x
  2. Step 2: Convert to fraction form
    128,743.13/188,505.75 = 188,505.75/x
  3. Step 3: Cross multiply
    128,743.13x = 188,505.75 × 188,505.75
  4. Step 4: Simplify right side
    128,743.13x = 35,534,417,783.06
  5. Step 5: Solve for x
    x = 35,534,417,783.06/128,743.13
  6. Step 6: Final answer
    x = 276,010.22

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.