Home / 149,622.66-206,480.21-81,639.77

Finding the Fourth Proportional to 149,622.66, 206,480.21 and 81,639.77

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Solution

The fourth proportional to 149,622.66, 206,480.21 and 81,639.77 is: 112,663.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,622.66 : 206,480.21 = 81,639.77 : x
  2. Step 2: Convert to fraction form
    149,622.66/206,480.21 = 81,639.77/x
  3. Step 3: Cross multiply
    149,622.66x = 206,480.21 × 81,639.77
  4. Step 4: Simplify right side
    149,622.66x = 16,856,995,413.35
  5. Step 5: Solve for x
    x = 16,856,995,413.35/149,622.66
  6. Step 6: Final answer
    x = 112,663.39

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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.