Home / 209,755.17-289,464.03-123,716.16

Finding the Fourth Proportional to 209,755.17, 289,464.03 and 123,716.16

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Solution

The fourth proportional to 209,755.17, 289,464.03 and 123,716.16 is: 170,729.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,755.17 : 289,464.03 = 123,716.16 : x
  2. Step 2: Convert to fraction form
    209,755.17/289,464.03 = 123,716.16/x
  3. Step 3: Cross multiply
    209,755.17x = 289,464.03 × 123,716.16
  4. Step 4: Simplify right side
    209,755.17x = 35,811,378,249.72
  5. Step 5: Solve for x
    x = 35,811,378,249.72/209,755.17
  6. Step 6: Final answer
    x = 170,729.42

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1.5x scale

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.