Home / 111,971.20-167,956.80-49,641.70

Finding the Fourth Proportional to 111,971.20, 167,956.80 and 49,641.70

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Solution

The fourth proportional to 111,971.20, 167,956.80 and 49,641.70 is: 74,462.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,971.20 : 167,956.80 = 49,641.70 : x
  2. Step 2: Convert to fraction form
    111,971.20/167,956.80 = 49,641.70/x
  3. Step 3: Cross multiply
    111,971.20x = 167,956.80 × 49,641.70
  4. Step 4: Simplify right side
    111,971.20x = 8,337,661,078.56
  5. Step 5: Solve for x
    x = 8,337,661,078.56/111,971.20
  6. Step 6: Final answer
    x = 74,462.55

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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.