Home / 129,628.20-194,327.10-85,276.20

Finding the Fourth Proportional to 129,628.20, 194,327.10 and 85,276.20

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Solution

The fourth proportional to 129,628.20, 194,327.10 and 85,276.20 is: 127,838.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,628.20 : 194,327.10 = 85,276.20 : x
  2. Step 2: Convert to fraction form
    129,628.20/194,327.10 = 85,276.20/x
  3. Step 3: Cross multiply
    129,628.20x = 194,327.10 × 85,276.20
  4. Step 4: Simplify right side
    129,628.20x = 16,571,476,645.02
  5. Step 5: Solve for x
    x = 16,571,476,645.02/129,628.20
  6. Step 6: Final answer
    x = 127,838.52

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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.