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Finding the Fourth Proportional to 172,636.38, 258,880.32 and 60,282.90

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Solution

The fourth proportional to 172,636.38, 258,880.32 and 60,282.90 is: 90,398.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,636.38 : 258,880.32 = 60,282.90 : x
  2. Step 2: Convert to fraction form
    172,636.38/258,880.32 = 60,282.90/x
  3. Step 3: Cross multiply
    172,636.38x = 258,880.32 × 60,282.90
  4. Step 4: Simplify right side
    172,636.38x = 15,606,056,442.53
  5. Step 5: Solve for x
    x = 15,606,056,442.53/172,636.38
  6. Step 6: Final answer
    x = 90,398.42

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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.