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Finding the Fourth Proportional to 172,919.21, 259,495.65 and 60,600.56

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Solution

The fourth proportional to 172,919.21, 259,495.65 and 60,600.56 is: 90,941.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,919.21 : 259,495.65 = 60,600.56 : x
  2. Step 2: Convert to fraction form
    172,919.21/259,495.65 = 60,600.56/x
  3. Step 3: Cross multiply
    172,919.21x = 259,495.65 × 60,600.56
  4. Step 4: Simplify right side
    172,919.21x = 15,725,580,410.09
  5. Step 5: Solve for x
    x = 15,725,580,410.09/172,919.21
  6. Step 6: Final answer
    x = 90,941.78

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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.