Home / 120,832.81-166,795.77-80,531.86

Finding the Fourth Proportional to 120,832.81, 166,795.77 and 80,531.86

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Solution

The fourth proportional to 120,832.81, 166,795.77 and 80,531.86 is: 111,164.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,832.81 : 166,795.77 = 80,531.86 : x
  2. Step 2: Convert to fraction form
    120,832.81/166,795.77 = 80,531.86/x
  3. Step 3: Cross multiply
    120,832.81x = 166,795.77 × 80,531.86
  4. Step 4: Simplify right side
    120,832.81x = 13,432,373,598.23
  5. Step 5: Solve for x
    x = 13,432,373,598.23/120,832.81
  6. Step 6: Final answer
    x = 111,164.95

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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.