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Finding the Fourth Proportional to 172,685.63, 259,176.06 and 67,578.41

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Solution

The fourth proportional to 172,685.63, 259,176.06 and 67,578.41 is: 101,425.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,685.63 : 259,176.06 = 67,578.41 : x
  2. Step 2: Convert to fraction form
    172,685.63/259,176.06 = 67,578.41/x
  3. Step 3: Cross multiply
    172,685.63x = 259,176.06 × 67,578.41
  4. Step 4: Simplify right side
    172,685.63x = 17,514,706,044.86
  5. Step 5: Solve for x
    x = 17,514,706,044.86/172,685.63
  6. Step 6: Final answer
    x = 101,425.38

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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.