Home / 259,316.46-389,003.88-81,770.94

Finding the Fourth Proportional to 259,316.46, 389,003.88 and 81,770.94

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Solution

The fourth proportional to 259,316.46, 389,003.88 and 81,770.94 is: 122,665.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,316.46 : 389,003.88 = 81,770.94 : x
  2. Step 2: Convert to fraction form
    259,316.46/389,003.88 = 81,770.94/x
  3. Step 3: Cross multiply
    259,316.46x = 389,003.88 × 81,770.94
  4. Step 4: Simplify right side
    259,316.46x = 31,809,212,931.25
  5. Step 5: Solve for x
    x = 31,809,212,931.25/259,316.46
  6. Step 6: Final answer
    x = 122,665.61

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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.