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Finding the Fourth Proportional to 139,556.58, 192,589.50 and 75,895.80

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Solution

The fourth proportional to 139,556.58, 192,589.50 and 75,895.80 is: 104,736.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,556.58 : 192,589.50 = 75,895.80 : x
  2. Step 2: Convert to fraction form
    139,556.58/192,589.50 = 75,895.80/x
  3. Step 3: Cross multiply
    139,556.58x = 192,589.50 × 75,895.80
  4. Step 4: Simplify right side
    139,556.58x = 14,616,734,174.10
  5. Step 5: Solve for x
    x = 14,616,734,174.10/139,556.58
  6. Step 6: Final answer
    x = 104,736.98

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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.