Home / 129,966.30-194,949.45-128,216.70

Finding the Fourth Proportional to 129,966.30, 194,949.45 and 128,216.70

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Solution

The fourth proportional to 129,966.30, 194,949.45 and 128,216.70 is: 192,325.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,966.30 : 194,949.45 = 128,216.70 : x
  2. Step 2: Convert to fraction form
    129,966.30/194,949.45 = 128,216.70/x
  3. Step 3: Cross multiply
    129,966.30x = 194,949.45 × 128,216.70
  4. Step 4: Simplify right side
    129,966.30x = 24,995,775,145.82
  5. Step 5: Solve for x
    x = 24,995,775,145.82/129,966.30
  6. Step 6: Final answer
    x = 192,325.05

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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.