Home / 149,657.05-206,520.33-81,672.31

Finding the Fourth Proportional to 149,657.05, 206,520.33 and 81,672.31

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Solution

The fourth proportional to 149,657.05, 206,520.33 and 81,672.31 is: 112,704.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,657.05 : 206,520.33 = 81,672.31 : x
  2. Step 2: Convert to fraction form
    149,657.05/206,520.33 = 81,672.31/x
  3. Step 3: Cross multiply
    149,657.05x = 206,520.33 × 81,672.31
  4. Step 4: Simplify right side
    149,657.05x = 16,866,992,413.06
  5. Step 5: Solve for x
    x = 16,866,992,413.06/149,657.05
  6. Step 6: Final answer
    x = 112,704.30

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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.