Home / 129,612.20-194,303.10-85,260.20

Finding the Fourth Proportional to 129,612.20, 194,303.10 and 85,260.20

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Solution

The fourth proportional to 129,612.20, 194,303.10 and 85,260.20 is: 127,814.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,612.20 : 194,303.10 = 85,260.20 : x
  2. Step 2: Convert to fraction form
    129,612.20/194,303.10 = 85,260.20/x
  3. Step 3: Cross multiply
    129,612.20x = 194,303.10 × 85,260.20
  4. Step 4: Simplify right side
    129,612.20x = 16,566,321,166.62
  5. Step 5: Solve for x
    x = 16,566,321,166.62/129,612.20
  6. Step 6: Final answer
    x = 127,814.52

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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.