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Finding the Fourth Proportional to 129,758.60, 194,568.50 and 66,552.93

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Solution

The fourth proportional to 129,758.60, 194,568.50 and 66,552.93 is: 99,793.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,758.60 : 194,568.50 = 66,552.93 : x
  2. Step 2: Convert to fraction form
    129,758.60/194,568.50 = 66,552.93/x
  3. Step 3: Cross multiply
    129,758.60x = 194,568.50 × 66,552.93
  4. Step 4: Simplify right side
    129,758.60x = 12,949,103,427.94
  5. Step 5: Solve for x
    x = 12,949,103,427.94/129,758.60
  6. Step 6: Final answer
    x = 99,793.80

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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.