Home / 149,396.09-206,164.02-81,413.65

Finding the Fourth Proportional to 149,396.09, 206,164.02 and 81,413.65

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Solution

The fourth proportional to 149,396.09, 206,164.02 and 81,413.65 is: 112,349.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,396.09 : 206,164.02 = 81,413.65 : x
  2. Step 2: Convert to fraction form
    149,396.09/206,164.02 = 81,413.65/x
  3. Step 3: Cross multiply
    149,396.09x = 206,164.02 × 81,413.65
  4. Step 4: Simplify right side
    149,396.09x = 16,784,565,366.87
  5. Step 5: Solve for x
    x = 16,784,565,366.87/149,396.09
  6. Step 6: Final answer
    x = 112,349.43

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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.