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Finding the Fourth Proportional to 101,245.77, 139,716.36 and 55,922.94

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Solution

The fourth proportional to 101,245.77, 139,716.36 and 55,922.94 is: 77,172.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,245.77 : 139,716.36 = 55,922.94 : x
  2. Step 2: Convert to fraction form
    101,245.77/139,716.36 = 55,922.94/x
  3. Step 3: Cross multiply
    101,245.77x = 139,716.36 × 55,922.94
  4. Step 4: Simplify right side
    101,245.77x = 7,813,349,617.30
  5. Step 5: Solve for x
    x = 7,813,349,617.30/101,245.77
  6. Step 6: Final answer
    x = 77,172.11

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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.