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Finding the Fourth Proportional to 172,708.27, 259,097.33 and 72,868.68

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Solution

The fourth proportional to 172,708.27, 259,097.33 and 72,868.68 is: 109,317.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,708.27 : 259,097.33 = 72,868.68 : x
  2. Step 2: Convert to fraction form
    172,708.27/259,097.33 = 72,868.68/x
  3. Step 3: Cross multiply
    172,708.27x = 259,097.33 × 72,868.68
  4. Step 4: Simplify right side
    172,708.27x = 18,880,080,610.80
  5. Step 5: Solve for x
    x = 18,880,080,610.80/172,708.27
  6. Step 6: Final answer
    x = 109,317.76

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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.