Home / 139,974.81-193,168.25-76,313.04

Finding the Fourth Proportional to 139,974.81, 193,168.25 and 76,313.04

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Solution

The fourth proportional to 139,974.81, 193,168.25 and 76,313.04 is: 105,313.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,974.81 : 193,168.25 = 76,313.04 : x
  2. Step 2: Convert to fraction form
    139,974.81/193,168.25 = 76,313.04/x
  3. Step 3: Cross multiply
    139,974.81x = 193,168.25 × 76,313.04
  4. Step 4: Simplify right side
    139,974.81x = 14,741,256,388.98
  5. Step 5: Solve for x
    x = 14,741,256,388.98/139,974.81
  6. Step 6: Final answer
    x = 105,313.64

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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.