Home / 135,749.75-203,653.87-40,972

Finding the Fourth Proportional to 135,749.75, 203,653.87 and 40,972

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Solution

The fourth proportional to 135,749.75, 203,653.87 and 40,972 is: 61,466.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,749.75 : 203,653.87 = 40,972 : x
  2. Step 2: Convert to fraction form
    135,749.75/203,653.87 = 40,972/x
  3. Step 3: Cross multiply
    135,749.75x = 203,653.87 × 40,972
  4. Step 4: Simplify right side
    135,749.75x = 8,344,106,361.64
  5. Step 5: Solve for x
    x = 8,344,106,361.64/135,749.75
  6. Step 6: Final answer
    x = 61,466.83

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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.