Finding the Fourth Proportional to 128,469.51, 192,709.53 and 34,975.26
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Solution
The fourth proportional to 128,469.51, 192,709.53 and 34,975.26 is: 52,464.32
Step by Step Solution
- Step 1: Write the proportion equation
128,469.51 : 192,709.53 = 34,975.26 : x - Step 2: Convert to fraction form
128,469.51/192,709.53 = 34,975.26/x - Step 3: Cross multiply
128,469.51x = 192,709.53 × 34,975.26 - Step 4: Simplify right side
128,469.51x = 6,740,065,916.23 - Step 5: Solve for x
x = 6,740,065,916.23/128,469.51 - Step 6: Final answer
x = 52,464.32
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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.