Home / 111,938.62-167,907.75-76,771.66

Finding the Fourth Proportional to 111,938.62, 167,907.75 and 76,771.66

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Solution

The fourth proportional to 111,938.62, 167,907.75 and 76,771.66 is: 115,157.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,938.62 : 167,907.75 = 76,771.66 : x
  2. Step 2: Convert to fraction form
    111,938.62/167,907.75 = 76,771.66/x
  3. Step 3: Cross multiply
    111,938.62x = 167,907.75 × 76,771.66
  4. Step 4: Simplify right side
    111,938.62x = 12,890,556,694.37
  5. Step 5: Solve for x
    x = 12,890,556,694.37/111,938.62
  6. Step 6: Final answer
    x = 115,157.37

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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.