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Finding the Fourth Proportional to 103,669.36, 155,503.23 and 28,790.53

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Solution

The fourth proportional to 103,669.36, 155,503.23 and 28,790.53 is: 43,185.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,669.36 : 155,503.23 = 28,790.53 : x
  2. Step 2: Convert to fraction form
    103,669.36/155,503.23 = 28,790.53/x
  3. Step 3: Cross multiply
    103,669.36x = 155,503.23 × 28,790.53
  4. Step 4: Simplify right side
    103,669.36x = 4,477,020,408.41
  5. Step 5: Solve for x
    x = 4,477,020,408.41/103,669.36
  6. Step 6: Final answer
    x = 43,185.57

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