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Finding the Fourth Proportional to 133,068.90, 183,627.32 and 72,627.50

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Solution

The fourth proportional to 133,068.90, 183,627.32 and 72,627.50 is: 100,221.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,068.90 : 183,627.32 = 72,627.50 : x
  2. Step 2: Convert to fraction form
    133,068.90/183,627.32 = 72,627.50/x
  3. Step 3: Cross multiply
    133,068.90x = 183,627.32 × 72,627.50
  4. Step 4: Simplify right side
    133,068.90x = 13,336,393,183.30
  5. Step 5: Solve for x
    x = 13,336,393,183.30/133,068.90
  6. Step 6: Final answer
    x = 100,221.71

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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.