Home / 135,861.40-203,945.70-104,834.20

Finding the Fourth Proportional to 135,861.40, 203,945.70 and 104,834.20

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Solution

The fourth proportional to 135,861.40, 203,945.70 and 104,834.20 is: 157,369.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,861.40 : 203,945.70 = 104,834.20 : x
  2. Step 2: Convert to fraction form
    135,861.40/203,945.70 = 104,834.20/x
  3. Step 3: Cross multiply
    135,861.40x = 203,945.70 × 104,834.20
  4. Step 4: Simplify right side
    135,861.40x = 21,380,484,302.94
  5. Step 5: Solve for x
    x = 21,380,484,302.94/135,861.40
  6. Step 6: Final answer
    x = 157,369.82

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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.