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Finding the Fourth Proportional to 129,690.32, 194,395.32 and 54,793.04

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Solution

The fourth proportional to 129,690.32, 194,395.32 and 54,793.04 is: 82,130.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,690.32 : 194,395.32 = 54,793.04 : x
  2. Step 2: Convert to fraction form
    129,690.32/194,395.32 = 54,793.04/x
  3. Step 3: Cross multiply
    129,690.32x = 194,395.32 × 54,793.04
  4. Step 4: Simplify right side
    129,690.32x = 10,651,510,544.57
  5. Step 5: Solve for x
    x = 10,651,510,544.57/129,690.32
  6. Step 6: Final answer
    x = 82,130.34

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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.