Home / 149,765.86-206,685.27-81,789.14

Finding the Fourth Proportional to 149,765.86, 206,685.27 and 81,789.14

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Solution

The fourth proportional to 149,765.86, 206,685.27 and 81,789.14 is: 112,873.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,765.86 : 206,685.27 = 81,789.14 : x
  2. Step 2: Convert to fraction form
    149,765.86/206,685.27 = 81,789.14/x
  3. Step 3: Cross multiply
    149,765.86x = 206,685.27 × 81,789.14
  4. Step 4: Simplify right side
    149,765.86x = 16,904,611,000.68
  5. Step 5: Solve for x
    x = 16,904,611,000.68/149,765.86
  6. Step 6: Final answer
    x = 112,873.59

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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.