Home / 111,786.86-167,680.64-70,146.38

Finding the Fourth Proportional to 111,786.86, 167,680.64 and 70,146.38

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Solution

The fourth proportional to 111,786.86, 167,680.64 and 70,146.38 is: 105,219.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,786.86 : 167,680.64 = 70,146.38 : x
  2. Step 2: Convert to fraction form
    111,786.86/167,680.64 = 70,146.38/x
  3. Step 3: Cross multiply
    111,786.86x = 167,680.64 × 70,146.38
  4. Step 4: Simplify right side
    111,786.86x = 11,762,189,229.05
  5. Step 5: Solve for x
    x = 11,762,189,229.05/111,786.86
  6. Step 6: Final answer
    x = 105,219.79

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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.