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Finding the Fourth Proportional to 129,553.40, 194,621.70 and 126,054.20

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Solution

The fourth proportional to 129,553.40, 194,621.70 and 126,054.20 is: 189,365.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,553.40 : 194,621.70 = 126,054.20 : x
  2. Step 2: Convert to fraction form
    129,553.40/194,621.70 = 126,054.20/x
  3. Step 3: Cross multiply
    129,553.40x = 194,621.70 × 126,054.20
  4. Step 4: Simplify right side
    129,553.40x = 24,532,882,696.14
  5. Step 5: Solve for x
    x = 24,532,882,696.14/129,553.40
  6. Step 6: Final answer
    x = 189,365.02

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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.