Finding the Fourth Proportional to 128,283.21, 192,424.82 and 34,786.53
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Solution
The fourth proportional to 128,283.21, 192,424.82 and 34,786.53 is: 52,179.80
Step by Step Solution
- Step 1: Write the proportion equation
128,283.21 : 192,424.82 = 34,786.53 : x - Step 2: Convert to fraction form
128,283.21/192,424.82 = 34,786.53/x - Step 3: Cross multiply
128,283.21x = 192,424.82 × 34,786.53 - Step 4: Simplify right side
128,283.21x = 6,693,791,599.74 - Step 5: Solve for x
x = 6,693,791,599.74/128,283.21 - Step 6: Final answer
x = 52,179.80
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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.