Home / 120,455.22-166,229.31-66,745.20

Finding the Fourth Proportional to 120,455.22, 166,229.31 and 66,745.20

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Solution

The fourth proportional to 120,455.22, 166,229.31 and 66,745.20 is: 92,108.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,455.22 : 166,229.31 = 66,745.20 : x
  2. Step 2: Convert to fraction form
    120,455.22/166,229.31 = 66,745.20/x
  3. Step 3: Cross multiply
    120,455.22x = 166,229.31 × 66,745.20
  4. Step 4: Simplify right side
    120,455.22x = 11,095,008,541.81
  5. Step 5: Solve for x
    x = 11,095,008,541.81/120,455.22
  6. Step 6: Final answer
    x = 92,108.99

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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.