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Finding the Fourth Proportional to 133,219.44, 183,663.72 and 129,091.68

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Solution

The fourth proportional to 133,219.44, 183,663.72 and 129,091.68 is: 177,972.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,219.44 : 183,663.72 = 129,091.68 : x
  2. Step 2: Convert to fraction form
    133,219.44/183,663.72 = 129,091.68/x
  3. Step 3: Cross multiply
    133,219.44x = 183,663.72 × 129,091.68
  4. Step 4: Simplify right side
    133,219.44x = 23,709,458,169.85
  5. Step 5: Solve for x
    x = 23,709,458,169.85/133,219.44
  6. Step 6: Final answer
    x = 177,972.96

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1.5x scale

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.