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Finding the Fourth Proportional to 135,571, 203,386.28 and 55,609.44

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Solution

The fourth proportional to 135,571, 203,386.28 and 55,609.44 is: 83,426.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,571 : 203,386.28 = 55,609.44 : x
  2. Step 2: Convert to fraction form
    135,571/203,386.28 = 55,609.44/x
  3. Step 3: Cross multiply
    135,571x = 203,386.28 × 55,609.44
  4. Step 4: Simplify right side
    135,571x = 11,310,197,134.48
  5. Step 5: Solve for x
    x = 11,310,197,134.48/135,571
  6. Step 6: Final answer
    x = 83,426.38

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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.