Home / 129,628.20-194,442.30-40,908.90

Finding the Fourth Proportional to 129,628.20, 194,442.30 and 40,908.90

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Solution

The fourth proportional to 129,628.20, 194,442.30 and 40,908.90 is: 61,363.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,628.20 : 194,442.30 = 40,908.90 : x
  2. Step 2: Convert to fraction form
    129,628.20/194,442.30 = 40,908.90/x
  3. Step 3: Cross multiply
    129,628.20x = 194,442.30 × 40,908.90
  4. Step 4: Simplify right side
    129,628.20x = 7,954,420,606.47
  5. Step 5: Solve for x
    x = 7,954,420,606.47/129,628.20
  6. Step 6: Final answer
    x = 61,363.35

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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.