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Finding the Fourth Proportional to 129,448.70, 194,199.53 and 54,568.86

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Solution

The fourth proportional to 129,448.70, 194,199.53 and 54,568.86 is: 81,864.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,448.70 : 194,199.53 = 54,568.86 : x
  2. Step 2: Convert to fraction form
    129,448.70/194,199.53 = 54,568.86/x
  3. Step 3: Cross multiply
    129,448.70x = 194,199.53 × 54,568.86
  4. Step 4: Simplify right side
    129,448.70x = 10,597,245,963.54
  5. Step 5: Solve for x
    x = 10,597,245,963.54/129,448.70
  6. Step 6: Final answer
    x = 81,864.45

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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.