Finding the Fourth Proportional to 128,618.22, 192,879.95 and 44,356.76
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Solution
The fourth proportional to 128,618.22, 192,879.95 and 44,356.76 is: 66,518.79
Step by Step Solution
- Step 1: Write the proportion equation
128,618.22 : 192,879.95 = 44,356.76 : x - Step 2: Convert to fraction form
128,618.22/192,879.95 = 44,356.76/x - Step 3: Cross multiply
128,618.22x = 192,879.95 × 44,356.76 - Step 4: Simplify right side
128,618.22x = 8,555,528,464.78 - Step 5: Solve for x
x = 8,555,528,464.78/128,618.22 - Step 6: Final answer
x = 66,518.79
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.