Home / 135,859.20-203,604.48-76,665.60

Finding the Fourth Proportional to 135,859.20, 203,604.48 and 76,665.60

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Solution

The fourth proportional to 135,859.20, 203,604.48 and 76,665.60 is: 114,894.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,859.20 : 203,604.48 = 76,665.60 : x
  2. Step 2: Convert to fraction form
    135,859.20/203,604.48 = 76,665.60/x
  3. Step 3: Cross multiply
    135,859.20x = 203,604.48 × 76,665.60
  4. Step 4: Simplify right side
    135,859.20x = 15,609,459,621.89
  5. Step 5: Solve for x
    x = 15,609,459,621.89/135,859.20
  6. Step 6: Final answer
    x = 114,894.39

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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.