Home / 120,821.36-166,739.04-67,106.61

Finding the Fourth Proportional to 120,821.36, 166,739.04 and 67,106.61

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Solution

The fourth proportional to 120,821.36, 166,739.04 and 67,106.61 is: 92,610.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,821.36 : 166,739.04 = 67,106.61 : x
  2. Step 2: Convert to fraction form
    120,821.36/166,739.04 = 67,106.61/x
  3. Step 3: Cross multiply
    120,821.36x = 166,739.04 × 67,106.61
  4. Step 4: Simplify right side
    120,821.36x = 11,189,291,729.05
  5. Step 5: Solve for x
    x = 11,189,291,729.05/120,821.36
  6. Step 6: Final answer
    x = 92,610.22

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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.