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Finding the Fourth Proportional to 172,311.69, 237,755.25 and 100,677.87

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Solution

The fourth proportional to 172,311.69, 237,755.25 and 100,677.87 is: 138,915.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,311.69 : 237,755.25 = 100,677.87 : x
  2. Step 2: Convert to fraction form
    172,311.69/237,755.25 = 100,677.87/x
  3. Step 3: Cross multiply
    172,311.69x = 237,755.25 × 100,677.87
  4. Step 4: Simplify right side
    172,311.69x = 23,936,692,151.32
  5. Step 5: Solve for x
    x = 23,936,692,151.32/172,311.69
  6. Step 6: Final answer
    x = 138,915.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.