Home / 219,819.96-303,255.23-129,135.03

Finding the Fourth Proportional to 219,819.96, 303,255.23 and 129,135.03

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Solution

The fourth proportional to 219,819.96, 303,255.23 and 129,135.03 is: 178,149.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,819.96 : 303,255.23 = 129,135.03 : x
  2. Step 2: Convert to fraction form
    219,819.96/303,255.23 = 129,135.03/x
  3. Step 3: Cross multiply
    219,819.96x = 303,255.23 × 129,135.03
  4. Step 4: Simplify right side
    219,819.96x = 39,160,871,440.82
  5. Step 5: Solve for x
    x = 39,160,871,440.82/219,819.96
  6. Step 6: Final answer
    x = 178,149.75

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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.