Home / 172,634.92-258,845.18-72,743.72

Finding the Fourth Proportional to 172,634.92, 258,845.18 and 72,743.72

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Solution

The fourth proportional to 172,634.92, 258,845.18 and 72,743.72 is: 109,070.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,634.92 : 258,845.18 = 72,743.72 : x
  2. Step 2: Convert to fraction form
    172,634.92/258,845.18 = 72,743.72/x
  3. Step 3: Cross multiply
    172,634.92x = 258,845.18 × 72,743.72
  4. Step 4: Simplify right side
    172,634.92x = 18,829,361,297.27
  5. Step 5: Solve for x
    x = 18,829,361,297.27/172,634.92
  6. Step 6: Final answer
    x = 109,070.41

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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.