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Finding the Fourth Proportional to 133,085.92, 183,650.72 and 72,644.56

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Solution

The fourth proportional to 133,085.92, 183,650.72 and 72,644.56 is: 100,245.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,085.92 : 183,650.72 = 72,644.56 : x
  2. Step 2: Convert to fraction form
    133,085.92/183,650.72 = 72,644.56/x
  3. Step 3: Cross multiply
    133,085.92x = 183,650.72 × 72,644.56
  4. Step 4: Simplify right side
    133,085.92x = 13,341,225,748.08
  5. Step 5: Solve for x
    x = 13,341,225,748.08/133,085.92
  6. Step 6: Final answer
    x = 100,245.21

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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.