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Finding the Fourth Proportional to 139,636.19, 192,697.02 and 75,974.24

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Solution

The fourth proportional to 139,636.19, 192,697.02 and 75,974.24 is: 104,843.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,636.19 : 192,697.02 = 75,974.24 : x
  2. Step 2: Convert to fraction form
    139,636.19/192,697.02 = 75,974.24/x
  3. Step 3: Cross multiply
    139,636.19x = 192,697.02 × 75,974.24
  4. Step 4: Simplify right side
    139,636.19x = 14,640,008,681.28
  5. Step 5: Solve for x
    x = 14,640,008,681.28/139,636.19
  6. Step 6: Final answer
    x = 104,843.95

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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.