Finding the Fourth Proportional to 128,623.75, 192,948.99 and 35,129.50
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Solution
The fourth proportional to 128,623.75, 192,948.99 and 35,129.50 is: 52,697.90
Step by Step Solution
- Step 1: Write the proportion equation
128,623.75 : 192,948.99 = 35,129.50 : x - Step 2: Convert to fraction form
128,623.75/192,948.99 = 35,129.50/x - Step 3: Cross multiply
128,623.75x = 192,948.99 × 35,129.50 - Step 4: Simplify right side
128,623.75x = 6,778,201,544.21 - Step 5: Solve for x
x = 6,778,201,544.21/128,623.75 - Step 6: Final answer
x = 52,697.90
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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.