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Finding the Fourth Proportional to 135,939.20, 203,908.80 and 116,256.20

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Solution

The fourth proportional to 135,939.20, 203,908.80 and 116,256.20 is: 174,384.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,939.20 : 203,908.80 = 116,256.20 : x
  2. Step 2: Convert to fraction form
    135,939.20/203,908.80 = 116,256.20/x
  3. Step 3: Cross multiply
    135,939.20x = 203,908.80 × 116,256.20
  4. Step 4: Simplify right side
    135,939.20x = 23,705,662,234.56
  5. Step 5: Solve for x
    x = 23,705,662,234.56/135,939.20
  6. Step 6: Final answer
    x = 174,384.30

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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.