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Finding the Fourth Proportional to 127,299.72, 175,676.39 and 69,939.78

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Solution

The fourth proportional to 127,299.72, 175,676.39 and 69,939.78 is: 96,518.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,299.72 : 175,676.39 = 69,939.78 : x
  2. Step 2: Convert to fraction form
    127,299.72/175,676.39 = 69,939.78/x
  3. Step 3: Cross multiply
    127,299.72x = 175,676.39 × 69,939.78
  4. Step 4: Simplify right side
    127,299.72x = 12,286,767,718.10
  5. Step 5: Solve for x
    x = 12,286,767,718.10/127,299.72
  6. Step 6: Final answer
    x = 96,518.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.