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Finding the Fourth Proportional to 101,183.60, 139,632.57 and 55,861.53

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Solution

The fourth proportional to 101,183.60, 139,632.57 and 55,861.53 is: 77,088.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,183.60 : 139,632.57 = 55,861.53 : x
  2. Step 2: Convert to fraction form
    101,183.60/139,632.57 = 55,861.53/x
  3. Step 3: Cross multiply
    101,183.60x = 139,632.57 × 55,861.53
  4. Step 4: Simplify right side
    101,183.60x = 7,800,088,998.03
  5. Step 5: Solve for x
    x = 7,800,088,998.03/101,183.60
  6. Step 6: Final answer
    x = 77,088.47

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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.