Finding the Fourth Proportional to 128,920.44, 193,334.28 and 44,657.88
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Solution
The fourth proportional to 128,920.44, 193,334.28 and 44,657.88 is: 66,970.75
Step by Step Solution
- Step 1: Write the proportion equation
128,920.44 : 193,334.28 = 44,657.88 : x - Step 2: Convert to fraction form
128,920.44/193,334.28 = 44,657.88/x - Step 3: Cross multiply
128,920.44x = 193,334.28 × 44,657.88 - Step 4: Simplify right side
128,920.44x = 8,633,899,076.13 - Step 5: Solve for x
x = 8,633,899,076.13/128,920.44 - Step 6: Final answer
x = 66,970.75
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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.