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Finding the Fourth Proportional to 100,900.74, 139,237.88 and 55,577.75

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Solution

The fourth proportional to 100,900.74, 139,237.88 and 55,577.75 is: 76,694.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,900.74 : 139,237.88 = 55,577.75 : x
  2. Step 2: Convert to fraction form
    100,900.74/139,237.88 = 55,577.75/x
  3. Step 3: Cross multiply
    100,900.74x = 139,237.88 × 55,577.75
  4. Step 4: Simplify right side
    100,900.74x = 7,738,527,111.09
  5. Step 5: Solve for x
    x = 7,738,527,111.09/100,900.74
  6. Step 6: Final answer
    x = 76,694.45

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