Home / 106,141.12-146,413.92-66,328

Finding the Fourth Proportional to 106,141.12, 146,413.92 and 66,328

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Solution

The fourth proportional to 106,141.12, 146,413.92 and 66,328 is: 91,494.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,141.12 : 146,413.92 = 66,328 : x
  2. Step 2: Convert to fraction form
    106,141.12/146,413.92 = 66,328/x
  3. Step 3: Cross multiply
    106,141.12x = 146,413.92 × 66,328
  4. Step 4: Simplify right side
    106,141.12x = 9,711,342,485.76
  5. Step 5: Solve for x
    x = 9,711,342,485.76/106,141.12
  6. Step 6: Final answer
    x = 91,494.63

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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.