Finding the Fourth Proportional to 139,428.27, 192,410.64 and 75,766.08
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Solution
The fourth proportional to 139,428.27, 192,410.64 and 75,766.08 is: 104,556.99
Step by Step Solution
- Step 1: Write the proportion equation
139,428.27 : 192,410.64 = 75,766.08 : x - Step 2: Convert to fraction form
139,428.27/192,410.64 = 75,766.08/x - Step 3: Cross multiply
139,428.27x = 192,410.64 × 75,766.08 - Step 4: Simplify right side
139,428.27x = 14,578,199,943.09 - Step 5: Solve for x
x = 14,578,199,943.09/139,428.27 - Step 6: Final answer
x = 104,556.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.