Home / 120,442.86-166,212.33-66,728.61

Finding the Fourth Proportional to 120,442.86, 166,212.33 and 66,728.61

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Solution

The fourth proportional to 120,442.86, 166,212.33 and 66,728.61 is: 92,086.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,442.86 : 166,212.33 = 66,728.61 : x
  2. Step 2: Convert to fraction form
    120,442.86/166,212.33 = 66,728.61/x
  3. Step 3: Cross multiply
    120,442.86x = 166,212.33 × 66,728.61
  4. Step 4: Simplify right side
    120,442.86x = 11,091,117,745.76
  5. Step 5: Solve for x
    x = 11,091,117,745.76/120,442.86
  6. Step 6: Final answer
    x = 92,086.14

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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.