Home / 120,820.31-166,727.42-67,108.77

Finding the Fourth Proportional to 120,820.31, 166,727.42 and 67,108.77

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Solution

The fourth proportional to 120,820.31, 166,727.42 and 67,108.77 is: 92,607.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,820.31 : 166,727.42 = 67,108.77 : x
  2. Step 2: Convert to fraction form
    120,820.31/166,727.42 = 67,108.77/x
  3. Step 3: Cross multiply
    120,820.31x = 166,727.42 × 67,108.77
  4. Step 4: Simplify right side
    120,820.31x = 11,188,871,745.93
  5. Step 5: Solve for x
    x = 11,188,871,745.93/120,820.31
  6. Step 6: Final answer
    x = 92,607.54

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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.