Home / 209,939.45-289,687.22-123,902.02

Finding the Fourth Proportional to 209,939.45, 289,687.22 and 123,902.02

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Solution

The fourth proportional to 209,939.45, 289,687.22 and 123,902.02 is: 170,967.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,939.45 : 289,687.22 = 123,902.02 : x
  2. Step 2: Convert to fraction form
    209,939.45/289,687.22 = 123,902.02/x
  3. Step 3: Cross multiply
    209,939.45x = 289,687.22 × 123,902.02
  4. Step 4: Simplify right side
    209,939.45x = 35,892,831,933.42
  5. Step 5: Solve for x
    x = 35,892,831,933.42/209,939.45
  6. Step 6: Final answer
    x = 170,967.55

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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.