Home / 139,218.43-192,121.53-75,556.23

Finding the Fourth Proportional to 139,218.43, 192,121.53 and 75,556.23

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Solution

The fourth proportional to 139,218.43, 192,121.53 and 75,556.23 is: 104,267.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,218.43 : 192,121.53 = 75,556.23 : x
  2. Step 2: Convert to fraction form
    139,218.43/192,121.53 = 75,556.23/x
  3. Step 3: Cross multiply
    139,218.43x = 192,121.53 × 75,556.23
  4. Step 4: Simplify right side
    139,218.43x = 14,515,978,508.63
  5. Step 5: Solve for x
    x = 14,515,978,508.63/139,218.43
  6. Step 6: Final answer
    x = 104,267.65

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1.5x scale

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.