Home / 120,665.70-166,542.89-69,686.73

Finding the Fourth Proportional to 120,665.70, 166,542.89 and 69,686.73

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Solution

The fourth proportional to 120,665.70, 166,542.89 and 69,686.73 is: 96,181.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,665.70 : 166,542.89 = 69,686.73 : x
  2. Step 2: Convert to fraction form
    120,665.70/166,542.89 = 69,686.73/x
  3. Step 3: Cross multiply
    120,665.70x = 166,542.89 × 69,686.73
  4. Step 4: Simplify right side
    120,665.70x = 11,605,829,408.85
  5. Step 5: Solve for x
    x = 11,605,829,408.85/120,665.70
  6. Step 6: Final answer
    x = 96,181.68

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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.