Home / 103,856.78-143,318.97-65,636.83

Finding the Fourth Proportional to 103,856.78, 143,318.97 and 65,636.83

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Solution

The fourth proportional to 103,856.78, 143,318.97 and 65,636.83 is: 90,576.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,856.78 : 143,318.97 = 65,636.83 : x
  2. Step 2: Convert to fraction form
    103,856.78/143,318.97 = 65,636.83/x
  3. Step 3: Cross multiply
    103,856.78x = 143,318.97 × 65,636.83
  4. Step 4: Simplify right side
    103,856.78x = 9,407,003,048.81
  5. Step 5: Solve for x
    x = 9,407,003,048.81/103,856.78
  6. Step 6: Final answer
    x = 90,576.68

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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.