Home / 111,990.44-167,986.02-76,823.48

Finding the Fourth Proportional to 111,990.44, 167,986.02 and 76,823.48

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Solution

The fourth proportional to 111,990.44, 167,986.02 and 76,823.48 is: 115,235.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,990.44 : 167,986.02 = 76,823.48 : x
  2. Step 2: Convert to fraction form
    111,990.44/167,986.02 = 76,823.48/x
  3. Step 3: Cross multiply
    111,990.44x = 167,986.02 × 76,823.48
  4. Step 4: Simplify right side
    111,990.44x = 12,905,270,647.75
  5. Step 5: Solve for x
    x = 12,905,270,647.75/111,990.44
  6. Step 6: Final answer
    x = 115,235.47

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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.