Home / 189,770.40-261,896.70-104,885.64

Finding the Fourth Proportional to 189,770.40, 261,896.70 and 104,885.64

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Solution

The fourth proportional to 189,770.40, 261,896.70 and 104,885.64 is: 144,749.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,770.40 : 261,896.70 = 104,885.64 : x
  2. Step 2: Convert to fraction form
    189,770.40/261,896.70 = 104,885.64/x
  3. Step 3: Cross multiply
    189,770.40x = 261,896.70 × 104,885.64
  4. Step 4: Simplify right side
    189,770.40x = 27,469,202,993.39
  5. Step 5: Solve for x
    x = 27,469,202,993.39/189,770.40
  6. Step 6: Final answer
    x = 144,749.67

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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.