Home / 209,974.42-289,756.35-123,961.11

Finding the Fourth Proportional to 209,974.42, 289,756.35 and 123,961.11

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Solution

The fourth proportional to 209,974.42, 289,756.35 and 123,961.11 is: 171,061.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,974.42 : 289,756.35 = 123,961.11 : x
  2. Step 2: Convert to fraction form
    209,974.42/289,756.35 = 123,961.11/x
  3. Step 3: Cross multiply
    209,974.42x = 289,756.35 × 123,961.11
  4. Step 4: Simplify right side
    209,974.42x = 35,918,517,326.77
  5. Step 5: Solve for x
    x = 35,918,517,326.77/209,974.42
  6. Step 6: Final answer
    x = 171,061.40

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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.