Home / 135,563.39-203,387.59-81,586.96

Finding the Fourth Proportional to 135,563.39, 203,387.59 and 81,586.96

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Solution

The fourth proportional to 135,563.39, 203,387.59 and 81,586.96 is: 122,406.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,563.39 : 203,387.59 = 81,586.96 : x
  2. Step 2: Convert to fraction form
    135,563.39/203,387.59 = 81,586.96/x
  3. Step 3: Cross multiply
    135,563.39x = 203,387.59 × 81,586.96
  4. Step 4: Simplify right side
    135,563.39x = 16,593,775,907.40
  5. Step 5: Solve for x
    x = 16,593,775,907.40/135,563.39
  6. Step 6: Final answer
    x = 122,406.03

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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.