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Finding the Fourth Proportional to 101,268.07, 151,798.41 and 42,138.07

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Solution

The fourth proportional to 101,268.07, 151,798.41 and 42,138.07 is: 63,163.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,268.07 : 151,798.41 = 42,138.07 : x
  2. Step 2: Convert to fraction form
    101,268.07/151,798.41 = 42,138.07/x
  3. Step 3: Cross multiply
    101,268.07x = 151,798.41 × 42,138.07
  4. Step 4: Simplify right side
    101,268.07x = 6,396,491,267.48
  5. Step 5: Solve for x
    x = 6,396,491,267.48/101,268.07
  6. Step 6: Final answer
    x = 63,163.95

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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.