Home / 120,891.26-166,778.19-75,490.42

Finding the Fourth Proportional to 120,891.26, 166,778.19 and 75,490.42

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Solution

The fourth proportional to 120,891.26, 166,778.19 and 75,490.42 is: 104,144.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,891.26 : 166,778.19 = 75,490.42 : x
  2. Step 2: Convert to fraction form
    120,891.26/166,778.19 = 75,490.42/x
  3. Step 3: Cross multiply
    120,891.26x = 166,778.19 × 75,490.42
  4. Step 4: Simplify right side
    120,891.26x = 12,590,154,776.05
  5. Step 5: Solve for x
    x = 12,590,154,776.05/120,891.26
  6. Step 6: Final answer
    x = 104,144.46

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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.