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Finding the Fourth Proportional to 203,131.64, 304,725.83 and 84,775.88

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Solution

The fourth proportional to 203,131.64, 304,725.83 and 84,775.88 is: 127,175.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,131.64 : 304,725.83 = 84,775.88 : x
  2. Step 2: Convert to fraction form
    203,131.64/304,725.83 = 84,775.88/x
  3. Step 3: Cross multiply
    203,131.64x = 304,725.83 × 84,775.88
  4. Step 4: Simplify right side
    203,131.64x = 25,833,398,449.47
  5. Step 5: Solve for x
    x = 25,833,398,449.47/203,131.64
  6. Step 6: Final answer
    x = 127,175.65

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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.