Finding the Fourth Proportional to 128,939.94, 193,412.29 and 44,702.84
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Solution
The fourth proportional to 128,939.94, 193,412.29 and 44,702.84 is: 67,055.09
Step by Step Solution
- Step 1: Write the proportion equation
128,939.94 : 193,412.29 = 44,702.84 : x - Step 2: Convert to fraction form
128,939.94/193,412.29 = 44,702.84/x - Step 3: Cross multiply
128,939.94x = 193,412.29 × 44,702.84 - Step 4: Simplify right side
128,939.94x = 8,646,079,137.43 - Step 5: Solve for x
x = 8,646,079,137.43/128,939.94 - Step 6: Final answer
x = 67,055.09
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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.