Finding the Fourth Proportional to 128,842.76, 193,262.34 and 44,664.20
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Solution
The fourth proportional to 128,842.76, 193,262.34 and 44,664.20 is: 66,995.68
Step by Step Solution
- Step 1: Write the proportion equation
128,842.76 : 193,262.34 = 44,664.20 : x - Step 2: Convert to fraction form
128,842.76/193,262.34 = 44,664.20/x - Step 3: Cross multiply
128,842.76x = 193,262.34 × 44,664.20 - Step 4: Simplify right side
128,842.76x = 8,631,907,806.23 - Step 5: Solve for x
x = 8,631,907,806.23/128,842.76 - Step 6: Final answer
x = 66,995.68
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1.5x scale
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.