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Finding the Fourth Proportional to 139,735.35, 192,838.23 and 76,076.64

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Solution

The fourth proportional to 139,735.35, 192,838.23 and 76,076.64 is: 104,987.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,735.35 : 192,838.23 = 76,076.64 : x
  2. Step 2: Convert to fraction form
    139,735.35/192,838.23 = 76,076.64/x
  3. Step 3: Cross multiply
    139,735.35x = 192,838.23 × 76,076.64
  4. Step 4: Simplify right side
    139,735.35x = 14,670,484,601.95
  5. Step 5: Solve for x
    x = 14,670,484,601.95/139,735.35
  6. Step 6: Final answer
    x = 104,987.64

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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.