Home / 138,943.22-208,372.27-50,185.78

Finding the Fourth Proportional to 138,943.22, 208,372.27 and 50,185.78

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Solution

The fourth proportional to 138,943.22, 208,372.27 and 50,185.78 is: 75,263.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,943.22 : 208,372.27 = 50,185.78 : x
  2. Step 2: Convert to fraction form
    138,943.22/208,372.27 = 50,185.78/x
  3. Step 3: Cross multiply
    138,943.22x = 208,372.27 × 50,185.78
  4. Step 4: Simplify right side
    138,943.22x = 10,457,324,900.32
  5. Step 5: Solve for x
    x = 10,457,324,900.32/138,943.22
  6. Step 6: Final answer
    x = 75,263.30

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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.