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Finding the Fourth Proportional to 120,608.75, 166,331.16 and 75,290.93

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Solution

The fourth proportional to 120,608.75, 166,331.16 and 75,290.93 is: 103,833.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,608.75 : 166,331.16 = 75,290.93 : x
  2. Step 2: Convert to fraction form
    120,608.75/166,331.16 = 75,290.93/x
  3. Step 3: Cross multiply
    120,608.75x = 166,331.16 × 75,290.93
  4. Step 4: Simplify right side
    120,608.75x = 12,523,226,892.72
  5. Step 5: Solve for x
    x = 12,523,226,892.72/120,608.75
  6. Step 6: Final answer
    x = 103,833.48

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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.