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Finding the Fourth Proportional to 172,930.48, 259,512.40 and 67,736.32

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Solution

The fourth proportional to 172,930.48, 259,512.40 and 67,736.32 is: 101,650.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,930.48 : 259,512.40 = 67,736.32 : x
  2. Step 2: Convert to fraction form
    172,930.48/259,512.40 = 67,736.32/x
  3. Step 3: Cross multiply
    172,930.48x = 259,512.40 × 67,736.32
  4. Step 4: Simplify right side
    172,930.48x = 17,578,414,970.37
  5. Step 5: Solve for x
    x = 17,578,414,970.37/172,930.48
  6. Step 6: Final answer
    x = 101,650.18

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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.