Finding the Fourth Proportional to 139,269.99, 192,193.37 and 81,911.73
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Solution
The fourth proportional to 139,269.99, 192,193.37 and 81,911.73 is: 113,038.65
Step by Step Solution
- Step 1: Write the proportion equation
139,269.99 : 192,193.37 = 81,911.73 : x - Step 2: Convert to fraction form
139,269.99/192,193.37 = 81,911.73/x - Step 3: Cross multiply
139,269.99x = 192,193.37 × 81,911.73 - Step 4: Simplify right side
139,269.99x = 15,742,891,969.78 - Step 5: Solve for x
x = 15,742,891,969.78/139,269.99 - Step 6: Final answer
x = 113,038.65
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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.