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Finding the Fourth Proportional to 236,131.56, 325,861.80 and 128,701.68

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Solution

The fourth proportional to 236,131.56, 325,861.80 and 128,701.68 is: 177,608.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,131.56 : 325,861.80 = 128,701.68 : x
  2. Step 2: Convert to fraction form
    236,131.56/325,861.80 = 128,701.68/x
  3. Step 3: Cross multiply
    236,131.56x = 325,861.80 × 128,701.68
  4. Step 4: Simplify right side
    236,131.56x = 41,938,961,107.82
  5. Step 5: Solve for x
    x = 41,938,961,107.82/236,131.56
  6. Step 6: Final answer
    x = 177,608.45

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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.