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Finding the Fourth Proportional to 101,183.76, 139,606.38 and 65,360.70

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Solution

The fourth proportional to 101,183.76, 139,606.38 and 65,360.70 is: 90,180.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,183.76 : 139,606.38 = 65,360.70 : x
  2. Step 2: Convert to fraction form
    101,183.76/139,606.38 = 65,360.70/x
  3. Step 3: Cross multiply
    101,183.76x = 139,606.38 × 65,360.70
  4. Step 4: Simplify right side
    101,183.76x = 9,124,770,721.27
  5. Step 5: Solve for x
    x = 9,124,770,721.27/101,183.76
  6. Step 6: Final answer
    x = 90,180.19

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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.