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Finding the Fourth Proportional to 172,930.75, 238,755.48 and 108,488.32

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Solution

The fourth proportional to 172,930.75, 238,755.48 and 108,488.32 is: 149,783.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,930.75 : 238,755.48 = 108,488.32 : x
  2. Step 2: Convert to fraction form
    172,930.75/238,755.48 = 108,488.32/x
  3. Step 3: Cross multiply
    172,930.75x = 238,755.48 × 108,488.32
  4. Step 4: Simplify right side
    172,930.75x = 25,902,180,915.99
  5. Step 5: Solve for x
    x = 25,902,180,915.99/172,930.75
  6. Step 6: Final answer
    x = 149,783.55

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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.