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Finding the Fourth Proportional to 129,741.80, 194,612.70 and 36,247.40

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Solution

The fourth proportional to 129,741.80, 194,612.70 and 36,247.40 is: 54,371.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,741.80 : 194,612.70 = 36,247.40 : x
  2. Step 2: Convert to fraction form
    129,741.80/194,612.70 = 36,247.40/x
  3. Step 3: Cross multiply
    129,741.80x = 194,612.70 × 36,247.40
  4. Step 4: Simplify right side
    129,741.80x = 7,054,204,381.98
  5. Step 5: Solve for x
    x = 7,054,204,381.98/129,741.80
  6. Step 6: Final answer
    x = 54,371.10

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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.