Home / 135,163.84-202,243.56-85,009.72

Finding the Fourth Proportional to 135,163.84, 202,243.56 and 85,009.72

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Solution

The fourth proportional to 135,163.84, 202,243.56 and 85,009.72 is: 127,198.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,163.84 : 202,243.56 = 85,009.72 : x
  2. Step 2: Convert to fraction form
    135,163.84/202,243.56 = 85,009.72/x
  3. Step 3: Cross multiply
    135,163.84x = 202,243.56 × 85,009.72
  4. Step 4: Simplify right side
    135,163.84x = 17,192,668,407.40
  5. Step 5: Solve for x
    x = 17,192,668,407.40/135,163.84
  6. Step 6: Final answer
    x = 127,198.73

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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.