Home / 204,861.78-307,302.39-99,555.30

Finding the Fourth Proportional to 204,861.78, 307,302.39 and 99,555.30

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Solution

The fourth proportional to 204,861.78, 307,302.39 and 99,555.30 is: 149,337.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,861.78 : 307,302.39 = 99,555.30 : x
  2. Step 2: Convert to fraction form
    204,861.78/307,302.39 = 99,555.30/x
  3. Step 3: Cross multiply
    204,861.78x = 307,302.39 × 99,555.30
  4. Step 4: Simplify right side
    204,861.78x = 30,593,581,627.17
  5. Step 5: Solve for x
    x = 30,593,581,627.17/204,861.78
  6. Step 6: Final answer
    x = 149,337.67

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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.