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Finding the Fourth Proportional to 108,221.73, 149,249.28 and 67,939.23

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Solution

The fourth proportional to 108,221.73, 149,249.28 and 67,939.23 is: 93,695.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,221.73 : 149,249.28 = 67,939.23 : x
  2. Step 2: Convert to fraction form
    108,221.73/149,249.28 = 67,939.23/x
  3. Step 3: Cross multiply
    108,221.73x = 149,249.28 × 67,939.23
  4. Step 4: Simplify right side
    108,221.73x = 10,139,881,161.25
  5. Step 5: Solve for x
    x = 10,139,881,161.25/108,221.73
  6. Step 6: Final answer
    x = 93,695.43

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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.