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Finding the Fourth Proportional to 108,881.56, 150,255.84 and 68,621.32

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Solution

The fourth proportional to 108,881.56, 150,255.84 and 68,621.32 is: 94,696.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,881.56 : 150,255.84 = 68,621.32 : x
  2. Step 2: Convert to fraction form
    108,881.56/150,255.84 = 68,621.32/x
  3. Step 3: Cross multiply
    108,881.56x = 150,255.84 × 68,621.32
  4. Step 4: Simplify right side
    108,881.56x = 10,310,754,078.51
  5. Step 5: Solve for x
    x = 10,310,754,078.51/108,881.56
  6. Step 6: Final answer
    x = 94,696.97

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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.