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Finding the Fourth Proportional to 133,168.90, 183,771.84 and 72,739.52

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Solution

The fourth proportional to 133,168.90, 183,771.84 and 72,739.52 is: 100,379.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,168.90 : 183,771.84 = 72,739.52 : x
  2. Step 2: Convert to fraction form
    133,168.90/183,771.84 = 72,739.52/x
  3. Step 3: Cross multiply
    133,168.90x = 183,771.84 × 72,739.52
  4. Step 4: Simplify right side
    133,168.90x = 13,367,475,431.12
  5. Step 5: Solve for x
    x = 13,367,475,431.12/133,168.90
  6. Step 6: Final answer
    x = 100,379.86

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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.