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Finding the Fourth Proportional to 126,392.73, 189,623.73 and 55,302.48

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Solution

The fourth proportional to 126,392.73, 189,623.73 and 55,302.48 is: 82,968.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,392.73 : 189,623.73 = 55,302.48 : x
  2. Step 2: Convert to fraction form
    126,392.73/189,623.73 = 55,302.48/x
  3. Step 3: Cross multiply
    126,392.73x = 189,623.73 × 55,302.48
  4. Step 4: Simplify right side
    126,392.73x = 10,486,662,535.85
  5. Step 5: Solve for x
    x = 10,486,662,535.85/126,392.73
  6. Step 6: Final answer
    x = 82,968.87

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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.