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Finding the Fourth Proportional to 101,388.89, 151,950.25 and 74,609.51

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Solution

The fourth proportional to 101,388.89, 151,950.25 and 74,609.51 is: 111,816.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,388.89 : 151,950.25 = 74,609.51 : x
  2. Step 2: Convert to fraction form
    101,388.89/151,950.25 = 74,609.51/x
  3. Step 3: Cross multiply
    101,388.89x = 151,950.25 × 74,609.51
  4. Step 4: Simplify right side
    101,388.89x = 11,336,933,240.23
  5. Step 5: Solve for x
    x = 11,336,933,240.23/101,388.89
  6. Step 6: Final answer
    x = 111,816.32

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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.