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Finding the Fourth Proportional to 108,608.22, 149,879.12 and 66,166.74

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Solution

The fourth proportional to 108,608.22, 149,879.12 and 66,166.74 is: 91,309.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,608.22 : 149,879.12 = 66,166.74 : x
  2. Step 2: Convert to fraction form
    108,608.22/149,879.12 = 66,166.74/x
  3. Step 3: Cross multiply
    108,608.22x = 149,879.12 × 66,166.74
  4. Step 4: Simplify right side
    108,608.22x = 9,917,012,764.47
  5. Step 5: Solve for x
    x = 9,917,012,764.47/108,608.22
  6. Step 6: Final answer
    x = 91,309.96

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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.