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Finding the Fourth Proportional to 172,600.35, 238,131.32 and 100,929.66

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Solution

The fourth proportional to 172,600.35, 238,131.32 and 100,929.66 is: 139,249.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,600.35 : 238,131.32 = 100,929.66 : x
  2. Step 2: Convert to fraction form
    172,600.35/238,131.32 = 100,929.66/x
  3. Step 3: Cross multiply
    172,600.35x = 238,131.32 × 100,929.66
  4. Step 4: Simplify right side
    172,600.35x = 24,034,512,658.30
  5. Step 5: Solve for x
    x = 24,034,512,658.30/172,600.35
  6. Step 6: Final answer
    x = 139,249.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.