Home / 111,215.27-166,788.40-40,128.65

Finding the Fourth Proportional to 111,215.27, 166,788.40 and 40,128.65

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Solution

The fourth proportional to 111,215.27, 166,788.40 and 40,128.65 is: 60,180.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,215.27 : 166,788.40 = 40,128.65 : x
  2. Step 2: Convert to fraction form
    111,215.27/166,788.40 = 40,128.65/x
  3. Step 3: Cross multiply
    111,215.27x = 166,788.40 × 40,128.65
  4. Step 4: Simplify right side
    111,215.27x = 6,692,993,327.66
  5. Step 5: Solve for x
    x = 6,692,993,327.66/111,215.27
  6. Step 6: Final answer
    x = 60,180.52

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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.