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Finding the Fourth Proportional to 148,313.56, 204,677.82 and 81,245.56

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Solution

The fourth proportional to 148,313.56, 204,677.82 and 81,245.56 is: 112,121.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,313.56 : 204,677.82 = 81,245.56 : x
  2. Step 2: Convert to fraction form
    148,313.56/204,677.82 = 81,245.56/x
  3. Step 3: Cross multiply
    148,313.56x = 204,677.82 × 81,245.56
  4. Step 4: Simplify right side
    148,313.56x = 16,629,164,105.48
  5. Step 5: Solve for x
    x = 16,629,164,105.48/148,313.56
  6. Step 6: Final answer
    x = 112,121.67

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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.