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Finding the Fourth Proportional to 139,150.21, 192,027.20 and 75,488.02

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Solution

The fourth proportional to 139,150.21, 192,027.20 and 75,488.02 is: 104,173.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,150.21 : 192,027.20 = 75,488.02 : x
  2. Step 2: Convert to fraction form
    139,150.21/192,027.20 = 75,488.02/x
  3. Step 3: Cross multiply
    139,150.21x = 192,027.20 × 75,488.02
  4. Step 4: Simplify right side
    139,150.21x = 14,495,752,736.70
  5. Step 5: Solve for x
    x = 14,495,752,736.70/139,150.21
  6. Step 6: Final answer
    x = 104,173.42

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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.