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Finding the Fourth Proportional to 120,093.78, 179,261.25 and 105,906.54

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Solution

The fourth proportional to 120,093.78, 179,261.25 and 105,906.54 is: 158,084.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,093.78 : 179,261.25 = 105,906.54 : x
  2. Step 2: Convert to fraction form
    120,093.78/179,261.25 = 105,906.54/x
  3. Step 3: Cross multiply
    120,093.78x = 179,261.25 × 105,906.54
  4. Step 4: Simplify right side
    120,093.78x = 18,984,938,743.58
  5. Step 5: Solve for x
    x = 18,984,938,743.58/120,093.78
  6. Step 6: Final answer
    x = 158,084.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.