Home / 129,828.70-194,743.05-66,843.10

Finding the Fourth Proportional to 129,828.70, 194,743.05 and 66,843.10

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Solution

The fourth proportional to 129,828.70, 194,743.05 and 66,843.10 is: 100,264.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,828.70 : 194,743.05 = 66,843.10 : x
  2. Step 2: Convert to fraction form
    129,828.70/194,743.05 = 66,843.10/x
  3. Step 3: Cross multiply
    129,828.70x = 194,743.05 × 66,843.10
  4. Step 4: Simplify right side
    129,828.70x = 13,017,229,165.46
  5. Step 5: Solve for x
    x = 13,017,229,165.46/129,828.70
  6. Step 6: Final answer
    x = 100,264.65

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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.