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Finding the Fourth Proportional to 172,103.10, 258,154.65 and 125,447.10

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Solution

The fourth proportional to 172,103.10, 258,154.65 and 125,447.10 is: 188,170.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,103.10 : 258,154.65 = 125,447.10 : x
  2. Step 2: Convert to fraction form
    172,103.10/258,154.65 = 125,447.10/x
  3. Step 3: Cross multiply
    172,103.10x = 258,154.65 × 125,447.10
  4. Step 4: Simplify right side
    172,103.10x = 32,384,752,194.02
  5. Step 5: Solve for x
    x = 32,384,752,194.02/172,103.10
  6. Step 6: Final answer
    x = 188,170.65

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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.