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Finding the Fourth Proportional to 138,880.74, 208,278.03 and 50,122.71

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Solution

The fourth proportional to 138,880.74, 208,278.03 and 50,122.71 is: 75,168.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,880.74 : 208,278.03 = 50,122.71 : x
  2. Step 2: Convert to fraction form
    138,880.74/208,278.03 = 50,122.71/x
  3. Step 3: Cross multiply
    138,880.74x = 208,278.03 × 50,122.71
  4. Step 4: Simplify right side
    138,880.74x = 10,439,459,297.06
  5. Step 5: Solve for x
    x = 10,439,459,297.06/138,880.74
  6. Step 6: Final answer
    x = 75,168.52

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.