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Finding the Fourth Proportional to 139,364.70, 192,323.25 and 75,702.44

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Solution

The fourth proportional to 139,364.70, 192,323.25 and 75,702.44 is: 104,469.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,364.70 : 192,323.25 = 75,702.44 : x
  2. Step 2: Convert to fraction form
    139,364.70/192,323.25 = 75,702.44/x
  3. Step 3: Cross multiply
    139,364.70x = 192,323.25 × 75,702.44
  4. Step 4: Simplify right side
    139,364.70x = 14,559,338,332.11
  5. Step 5: Solve for x
    x = 14,559,338,332.11/139,364.70
  6. Step 6: Final answer
    x = 104,469.34

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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.