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Finding the Fourth Proportional to 172,665.93, 259,034.05 and 72,826.49

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Solution

The fourth proportional to 172,665.93, 259,034.05 and 72,826.49 is: 109,254.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,665.93 : 259,034.05 = 72,826.49 : x
  2. Step 2: Convert to fraction form
    172,665.93/259,034.05 = 72,826.49/x
  3. Step 3: Cross multiply
    172,665.93x = 259,034.05 × 72,826.49
  4. Step 4: Simplify right side
    172,665.93x = 18,864,541,390.60
  5. Step 5: Solve for x
    x = 18,864,541,390.60/172,665.93
  6. Step 6: Final answer
    x = 109,254.57

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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.