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Finding the Fourth Proportional to 172,551.69, 258,788.66 and 67,316.49

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Solution

The fourth proportional to 172,551.69, 258,788.66 and 67,316.49 is: 100,959.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,551.69 : 258,788.66 = 67,316.49 : x
  2. Step 2: Convert to fraction form
    172,551.69/258,788.66 = 67,316.49/x
  3. Step 3: Cross multiply
    172,551.69x = 258,788.66 × 67,316.49
  4. Step 4: Simplify right side
    172,551.69x = 17,420,743,906.42
  5. Step 5: Solve for x
    x = 17,420,743,906.42/172,551.69
  6. Step 6: Final answer
    x = 100,959.57

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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.