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Finding the Fourth Proportional to 133,168.62, 183,771.47 and 72,739.25

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Solution

The fourth proportional to 133,168.62, 183,771.47 and 72,739.25 is: 100,379.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,168.62 : 183,771.47 = 72,739.25 : x
  2. Step 2: Convert to fraction form
    133,168.62/183,771.47 = 72,739.25/x
  3. Step 3: Cross multiply
    133,168.62x = 183,771.47 × 72,739.25
  4. Step 4: Simplify right side
    133,168.62x = 13,367,398,899.20
  5. Step 5: Solve for x
    x = 13,367,398,899.20/133,168.62
  6. Step 6: Final answer
    x = 100,379.50

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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.