Finding the Fourth Proportional to 128,752.18, 193,136.76 and 44,520.49
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Solution
The fourth proportional to 128,752.18, 193,136.76 and 44,520.49 is: 66,783.67
Step by Step Solution
- Step 1: Write the proportion equation
128,752.18 : 193,136.76 = 44,520.49 : x - Step 2: Convert to fraction form
128,752.18/193,136.76 = 44,520.49/x - Step 3: Cross multiply
128,752.18x = 193,136.76 × 44,520.49 - Step 4: Simplify right side
128,752.18x = 8,598,543,192.21 - Step 5: Solve for x
x = 8,598,543,192.21/128,752.18 - Step 6: Final answer
x = 66,783.67
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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.