Home / 139,953.68-193,126.39-78,709.04

Finding the Fourth Proportional to 139,953.68, 193,126.39 and 78,709.04

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Solution

The fourth proportional to 139,953.68, 193,126.39 and 78,709.04 is: 108,613.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,953.68 : 193,126.39 = 78,709.04 : x
  2. Step 2: Convert to fraction form
    139,953.68/193,126.39 = 78,709.04/x
  3. Step 3: Cross multiply
    139,953.68x = 193,126.39 × 78,709.04
  4. Step 4: Simplify right side
    139,953.68x = 15,200,792,755.57
  5. Step 5: Solve for x
    x = 15,200,792,755.57/139,953.68
  6. Step 6: Final answer
    x = 108,613.03

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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.