Home / 129,209.64-194,106.06-76,653.72

Finding the Fourth Proportional to 129,209.64, 194,106.06 and 76,653.72

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Solution

The fourth proportional to 129,209.64, 194,106.06 and 76,653.72 is: 115,153.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,209.64 : 194,106.06 = 76,653.72 : x
  2. Step 2: Convert to fraction form
    129,209.64/194,106.06 = 76,653.72/x
  3. Step 3: Cross multiply
    129,209.64x = 194,106.06 × 76,653.72
  4. Step 4: Simplify right side
    129,209.64x = 14,878,951,573.54
  5. Step 5: Solve for x
    x = 14,878,951,573.54/129,209.64
  6. Step 6: Final answer
    x = 115,153.57

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1.5x scale

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.