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Finding the Fourth Proportional to 108,609.06, 149,827.11 and 66,093.78

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Solution

The fourth proportional to 108,609.06, 149,827.11 and 66,093.78 is: 91,176.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,609.06 : 149,827.11 = 66,093.78 : x
  2. Step 2: Convert to fraction form
    108,609.06/149,827.11 = 66,093.78/x
  3. Step 3: Cross multiply
    108,609.06x = 149,827.11 × 66,093.78
  4. Step 4: Simplify right side
    108,609.06x = 9,902,640,046.38
  5. Step 5: Solve for x
    x = 9,902,640,046.38/108,609.06
  6. Step 6: Final answer
    x = 91,176.92

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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.