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Finding the Fourth Proportional to 139,468.28, 192,458.08 and 75,805.52

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Solution

The fourth proportional to 139,468.28, 192,458.08 and 75,805.52 is: 104,607.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,468.28 : 192,458.08 = 75,805.52 : x
  2. Step 2: Convert to fraction form
    139,468.28/192,458.08 = 75,805.52/x
  3. Step 3: Cross multiply
    139,468.28x = 192,458.08 × 75,805.52
  4. Step 4: Simplify right side
    139,468.28x = 14,589,384,832.60
  5. Step 5: Solve for x
    x = 14,589,384,832.60/139,468.28
  6. Step 6: Final answer
    x = 104,607.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.