Home / 129,650.64-194,476.16-85,474.72

Finding the Fourth Proportional to 129,650.64, 194,476.16 and 85,474.72

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Solution

The fourth proportional to 129,650.64, 194,476.16 and 85,474.72 is: 128,212.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,650.64 : 194,476.16 = 85,474.72 : x
  2. Step 2: Convert to fraction form
    129,650.64/194,476.16 = 85,474.72/x
  3. Step 3: Cross multiply
    129,650.64x = 194,476.16 × 85,474.72
  4. Step 4: Simplify right side
    129,650.64x = 16,622,795,322.68
  5. Step 5: Solve for x
    x = 16,622,795,322.68/129,650.64
  6. Step 6: Final answer
    x = 128,212.21

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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.