Home / 102,146.26-140,845.62-71,921.92

Finding the Fourth Proportional to 102,146.26, 140,845.62 and 71,921.92

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Solution

The fourth proportional to 102,146.26, 140,845.62 and 71,921.92 is: 99,170.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,146.26 : 140,845.62 = 71,921.92 : x
  2. Step 2: Convert to fraction form
    102,146.26/140,845.62 = 71,921.92/x
  3. Step 3: Cross multiply
    102,146.26x = 140,845.62 × 71,921.92
  4. Step 4: Simplify right side
    102,146.26x = 10,129,887,413.99
  5. Step 5: Solve for x
    x = 10,129,887,413.99/102,146.26
  6. Step 6: Final answer
    x = 99,170.42

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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.