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Finding the Fourth Proportional to 115,502.73, 172,942.62 and 75,422.44

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Solution

The fourth proportional to 115,502.73, 172,942.62 and 75,422.44 is: 112,930.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,502.73 : 172,942.62 = 75,422.44 : x
  2. Step 2: Convert to fraction form
    115,502.73/172,942.62 = 75,422.44/x
  3. Step 3: Cross multiply
    115,502.73x = 172,942.62 × 75,422.44
  4. Step 4: Simplify right side
    115,502.73x = 13,043,754,380.39
  5. Step 5: Solve for x
    x = 13,043,754,380.39/115,502.73
  6. Step 6: Final answer
    x = 112,930.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.