Home / 120,398.18-166,131.75-69,406.91

Finding the Fourth Proportional to 120,398.18, 166,131.75 and 69,406.91

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Solution

The fourth proportional to 120,398.18, 166,131.75 and 69,406.91 is: 95,771.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,398.18 : 166,131.75 = 69,406.91 : x
  2. Step 2: Convert to fraction form
    120,398.18/166,131.75 = 69,406.91/x
  3. Step 3: Cross multiply
    120,398.18x = 166,131.75 × 69,406.91
  4. Step 4: Simplify right side
    120,398.18x = 11,530,690,589.73
  5. Step 5: Solve for x
    x = 11,530,690,589.73/120,398.18
  6. Step 6: Final answer
    x = 95,771.31

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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.