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Finding the Fourth Proportional to 172,542.31, 238,086.99 and 99,944.28

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Solution

The fourth proportional to 172,542.31, 238,086.99 and 99,944.28 is: 137,910.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,542.31 : 238,086.99 = 99,944.28 : x
  2. Step 2: Convert to fraction form
    172,542.31/238,086.99 = 99,944.28/x
  3. Step 3: Cross multiply
    172,542.31x = 238,086.99 × 99,944.28
  4. Step 4: Simplify right side
    172,542.31x = 23,795,432,792.92
  5. Step 5: Solve for x
    x = 23,795,432,792.92/172,542.31
  6. Step 6: Final answer
    x = 137,910.71

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1.5x scale

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.