Home / 138,843.57-208,343.06-75,667.98

Finding the Fourth Proportional to 138,843.57, 208,343.06 and 75,667.98

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Solution

The fourth proportional to 138,843.57, 208,343.06 and 75,667.98 is: 113,544.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,843.57 : 208,343.06 = 75,667.98 : x
  2. Step 2: Convert to fraction form
    138,843.57/208,343.06 = 75,667.98/x
  3. Step 3: Cross multiply
    138,843.57x = 208,343.06 × 75,667.98
  4. Step 4: Simplify right side
    138,843.57x = 15,764,898,497.22
  5. Step 5: Solve for x
    x = 15,764,898,497.22/138,843.57
  6. Step 6: Final answer
    x = 113,544.32

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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.