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Finding the Fourth Proportional to 120,323.56, 180,662.79 and 67,119.49

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Solution

The fourth proportional to 120,323.56, 180,662.79 and 67,119.49 is: 100,778.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,323.56 : 180,662.79 = 67,119.49 : x
  2. Step 2: Convert to fraction form
    120,323.56/180,662.79 = 67,119.49/x
  3. Step 3: Cross multiply
    120,323.56x = 180,662.79 × 67,119.49
  4. Step 4: Simplify right side
    120,323.56x = 12,125,994,326.78
  5. Step 5: Solve for x
    x = 12,125,994,326.78/120,323.56
  6. Step 6: Final answer
    x = 100,778.22

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1.5x scale

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.