Home / 139,433.45-192,418.19-75,771.09

Finding the Fourth Proportional to 139,433.45, 192,418.19 and 75,771.09

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Solution

The fourth proportional to 139,433.45, 192,418.19 and 75,771.09 is: 104,564.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,433.45 : 192,418.19 = 75,771.09 : x
  2. Step 2: Convert to fraction form
    139,433.45/192,418.19 = 75,771.09/x
  3. Step 3: Cross multiply
    139,433.45x = 192,418.19 × 75,771.09
  4. Step 4: Simplify right side
    139,433.45x = 14,579,735,613.27
  5. Step 5: Solve for x
    x = 14,579,735,613.27/139,433.45
  6. Step 6: Final answer
    x = 104,564.12

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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.