Home / 107,388.12-148,128.60-69,198.24

Finding the Fourth Proportional to 107,388.12, 148,128.60 and 69,198.24

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Solution

The fourth proportional to 107,388.12, 148,128.60 and 69,198.24 is: 95,450.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,388.12 : 148,128.60 = 69,198.24 : x
  2. Step 2: Convert to fraction form
    107,388.12/148,128.60 = 69,198.24/x
  3. Step 3: Cross multiply
    107,388.12x = 148,128.60 × 69,198.24
  4. Step 4: Simplify right side
    107,388.12x = 10,250,238,413.66
  5. Step 5: Solve for x
    x = 10,250,238,413.66/107,388.12
  6. Step 6: Final answer
    x = 95,450.39

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1.5x scale

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.