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Finding the Fourth Proportional to 100,688.97, 151,023.71 and 30,568.89

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Solution

The fourth proportional to 100,688.97, 151,023.71 and 30,568.89 is: 45,850.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,688.97 : 151,023.71 = 30,568.89 : x
  2. Step 2: Convert to fraction form
    100,688.97/151,023.71 = 30,568.89/x
  3. Step 3: Cross multiply
    100,688.97x = 151,023.71 × 30,568.89
  4. Step 4: Simplify right side
    100,688.97x = 4,616,627,025.54
  5. Step 5: Solve for x
    x = 4,616,627,025.54/100,688.97
  6. Step 6: Final answer
    x = 45,850.37

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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.