Home / 111,840.92-154,290.31-75,530.57

Finding the Fourth Proportional to 111,840.92, 154,290.31 and 75,530.57

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Solution

The fourth proportional to 111,840.92, 154,290.31 and 75,530.57 is: 104,198.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,840.92 : 154,290.31 = 75,530.57 : x
  2. Step 2: Convert to fraction form
    111,840.92/154,290.31 = 75,530.57/x
  3. Step 3: Cross multiply
    111,840.92x = 154,290.31 × 75,530.57
  4. Step 4: Simplify right side
    111,840.92x = 11,653,634,682.12
  5. Step 5: Solve for x
    x = 11,653,634,682.12/111,840.92
  6. Step 6: Final answer
    x = 104,198.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.