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Finding the Fourth Proportional to 139,752, 192,861.18 and 76,093.26

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Solution

The fourth proportional to 139,752, 192,861.18 and 76,093.26 is: 105,010.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,752 : 192,861.18 = 76,093.26 : x
  2. Step 2: Convert to fraction form
    139,752/192,861.18 = 76,093.26/x
  3. Step 3: Cross multiply
    139,752x = 192,861.18 × 76,093.26
  4. Step 4: Simplify right side
    139,752x = 14,675,435,913.65
  5. Step 5: Solve for x
    x = 14,675,435,913.65/139,752
  6. Step 6: Final answer
    x = 105,010.56

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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.