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Finding the Fourth Proportional to 120,370.25, 166,108.32 and 65,922.46

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Solution

The fourth proportional to 120,370.25, 166,108.32 and 65,922.46 is: 90,971.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,370.25 : 166,108.32 = 65,922.46 : x
  2. Step 2: Convert to fraction form
    120,370.25/166,108.32 = 65,922.46/x
  3. Step 3: Cross multiply
    120,370.25x = 166,108.32 × 65,922.46
  4. Step 4: Simplify right side
    120,370.25x = 10,950,268,665.60
  5. Step 5: Solve for x
    x = 10,950,268,665.60/120,370.25
  6. Step 6: Final answer
    x = 90,971.55

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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.