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Finding the Fourth Proportional to 172,904.10, 259,356.15 and 108,006.90

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Solution

The fourth proportional to 172,904.10, 259,356.15 and 108,006.90 is: 162,010.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,904.10 : 259,356.15 = 108,006.90 : x
  2. Step 2: Convert to fraction form
    172,904.10/259,356.15 = 108,006.90/x
  3. Step 3: Cross multiply
    172,904.10x = 259,356.15 × 108,006.90
  4. Step 4: Simplify right side
    172,904.10x = 28,012,253,757.44
  5. Step 5: Solve for x
    x = 28,012,253,757.44/172,904.10
  6. Step 6: Final answer
    x = 162,010.35

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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.