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Finding the Fourth Proportional to 129,701.80, 194,552.70 and 36,207.40

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Solution

The fourth proportional to 129,701.80, 194,552.70 and 36,207.40 is: 54,311.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,701.80 : 194,552.70 = 36,207.40 : x
  2. Step 2: Convert to fraction form
    129,701.80/194,552.70 = 36,207.40/x
  3. Step 3: Cross multiply
    129,701.80x = 194,552.70 × 36,207.40
  4. Step 4: Simplify right side
    129,701.80x = 7,044,247,429.98
  5. Step 5: Solve for x
    x = 7,044,247,429.98/129,701.80
  6. Step 6: Final answer
    x = 54,311.10

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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.