Finding the Fourth Proportional to 128,136.72, 192,232.08 and 48,175.20
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Solution
The fourth proportional to 128,136.72, 192,232.08 and 48,175.20 is: 72,272.95
Step by Step Solution
- Step 1: Write the proportion equation
128,136.72 : 192,232.08 = 48,175.20 : x - Step 2: Convert to fraction form
128,136.72/192,232.08 = 48,175.20/x - Step 3: Cross multiply
128,136.72x = 192,232.08 × 48,175.20 - Step 4: Simplify right side
128,136.72x = 9,260,818,900.42 - Step 5: Solve for x
x = 9,260,818,900.42/128,136.72 - Step 6: Final answer
x = 72,272.95
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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.