Home / 129,249.27-193,935.87-66,919.77

Finding the Fourth Proportional to 129,249.27, 193,935.87 and 66,919.77

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Solution

The fourth proportional to 129,249.27, 193,935.87 and 66,919.77 is: 100,411.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,249.27 : 193,935.87 = 66,919.77 : x
  2. Step 2: Convert to fraction form
    129,249.27/193,935.87 = 66,919.77/x
  3. Step 3: Cross multiply
    129,249.27x = 193,935.87 × 66,919.77
  4. Step 4: Simplify right side
    129,249.27x = 12,978,143,815.15
  5. Step 5: Solve for x
    x = 12,978,143,815.15/129,249.27
  6. Step 6: Final answer
    x = 100,411.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.