Home / 209,975.17-289,757.39-123,961.86

Finding the Fourth Proportional to 209,975.17, 289,757.39 and 123,961.86

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Solution

The fourth proportional to 209,975.17, 289,757.39 and 123,961.86 is: 171,062.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,975.17 : 289,757.39 = 123,961.86 : x
  2. Step 2: Convert to fraction form
    209,975.17/289,757.39 = 123,961.86/x
  3. Step 3: Cross multiply
    209,975.17x = 289,757.39 × 123,961.86
  4. Step 4: Simplify right side
    209,975.17x = 35,918,862,944.55
  5. Step 5: Solve for x
    x = 35,918,862,944.55/209,975.17
  6. Step 6: Final answer
    x = 171,062.43

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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.