Finding the Fourth Proportional to 128,836.12, 193,284.16 and 40,084.96
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Solution
The fourth proportional to 128,836.12, 193,284.16 and 40,084.96 is: 60,136.77
Step by Step Solution
- Step 1: Write the proportion equation
128,836.12 : 193,284.16 = 40,084.96 : x - Step 2: Convert to fraction form
128,836.12/193,284.16 = 40,084.96/x - Step 3: Cross multiply
128,836.12x = 193,284.16 × 40,084.96 - Step 4: Simplify right side
128,836.12x = 7,747,787,822.23 - Step 5: Solve for x
x = 7,747,787,822.23/128,836.12 - Step 6: Final answer
x = 60,136.77
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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.