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Finding the Fourth Proportional to 172,904.40, 259,383.42 and 73,065.02

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Solution

The fourth proportional to 172,904.40, 259,383.42 and 73,065.02 is: 109,608.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,904.40 : 259,383.42 = 73,065.02 : x
  2. Step 2: Convert to fraction form
    172,904.40/259,383.42 = 73,065.02/x
  3. Step 3: Cross multiply
    172,904.40x = 259,383.42 × 73,065.02
  4. Step 4: Simplify right side
    172,904.40x = 18,951,854,769.97
  5. Step 5: Solve for x
    x = 18,951,854,769.97/172,904.40
  6. Step 6: Final answer
    x = 109,608.86

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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.