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Finding the Fourth Proportional to 133,081.96, 183,650.18 and 72,650.28

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Solution

The fourth proportional to 133,081.96, 183,650.18 and 72,650.28 is: 100,255.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,081.96 : 183,650.18 = 72,650.28 : x
  2. Step 2: Convert to fraction form
    133,081.96/183,650.18 = 72,650.28/x
  3. Step 3: Cross multiply
    133,081.96x = 183,650.18 × 72,650.28
  4. Step 4: Simplify right side
    133,081.96x = 13,342,236,999.05
  5. Step 5: Solve for x
    x = 13,342,236,999.05/133,081.96
  6. Step 6: Final answer
    x = 100,255.79

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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.