Home / 129,865.78-194,651.02-54,939.16

Finding the Fourth Proportional to 129,865.78, 194,651.02 and 54,939.16

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Solution

The fourth proportional to 129,865.78, 194,651.02 and 54,939.16 is: 82,346.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,865.78 : 194,651.02 = 54,939.16 : x
  2. Step 2: Convert to fraction form
    129,865.78/194,651.02 = 54,939.16/x
  3. Step 3: Cross multiply
    129,865.78x = 194,651.02 × 54,939.16
  4. Step 4: Simplify right side
    129,865.78x = 10,693,963,531.94
  5. Step 5: Solve for x
    x = 10,693,963,531.94/129,865.78
  6. Step 6: Final answer
    x = 82,346.28

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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.