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Finding the Fourth Proportional to 120,630.98, 166,467.53 and 69,641.97

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Solution

The fourth proportional to 120,630.98, 166,467.53 and 69,641.97 is: 96,104.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,630.98 : 166,467.53 = 69,641.97 : x
  2. Step 2: Convert to fraction form
    120,630.98/166,467.53 = 69,641.97/x
  3. Step 3: Cross multiply
    120,630.98x = 166,467.53 × 69,641.97
  4. Step 4: Simplify right side
    120,630.98x = 11,593,126,382.02
  5. Step 5: Solve for x
    x = 11,593,126,382.02/120,630.98
  6. Step 6: Final answer
    x = 96,104.06

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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.