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Finding the Fourth Proportional to 133,168.53, 183,771.48 and 72,739.23

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Solution

The fourth proportional to 133,168.53, 183,771.48 and 72,739.23 is: 100,379.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,168.53 : 183,771.48 = 72,739.23 : x
  2. Step 2: Convert to fraction form
    133,168.53/183,771.48 = 72,739.23/x
  3. Step 3: Cross multiply
    133,168.53x = 183,771.48 × 72,739.23
  4. Step 4: Simplify right side
    133,168.53x = 13,367,395,951.16
  5. Step 5: Solve for x
    x = 13,367,395,951.16/133,168.53
  6. Step 6: Final answer
    x = 100,379.54

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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.