Home / 138,974.90-208,239.87-135,284.27

Finding the Fourth Proportional to 138,974.90, 208,239.87 and 135,284.27

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Solution

The fourth proportional to 138,974.90, 208,239.87 and 135,284.27 is: 202,709.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,974.90 : 208,239.87 = 135,284.27 : x
  2. Step 2: Convert to fraction form
    138,974.90/208,239.87 = 135,284.27/x
  3. Step 3: Cross multiply
    138,974.90x = 208,239.87 × 135,284.27
  4. Step 4: Simplify right side
    138,974.90x = 28,171,578,797.84
  5. Step 5: Solve for x
    x = 28,171,578,797.84/138,974.90
  6. Step 6: Final answer
    x = 202,709.83

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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.