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Finding the Fourth Proportional to 103,670.36, 155,504.73 and 28,791.53

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Solution

The fourth proportional to 103,670.36, 155,504.73 and 28,791.53 is: 43,187.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,670.36 : 155,504.73 = 28,791.53 : x
  2. Step 2: Convert to fraction form
    103,670.36/155,504.73 = 28,791.53/x
  3. Step 3: Cross multiply
    103,670.36x = 155,504.73 × 28,791.53
  4. Step 4: Simplify right side
    103,670.36x = 4,477,219,098.94
  5. Step 5: Solve for x
    x = 4,477,219,098.94/103,670.36
  6. Step 6: Final answer
    x = 43,187.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.