Finding the Fourth Proportional to 139,414.99, 192,393.87 and 75,752.79
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Solution
The fourth proportional to 139,414.99, 192,393.87 and 75,752.79 is: 104,539.49
Step by Step Solution
- Step 1: Write the proportion equation
139,414.99 : 192,393.87 = 75,752.79 : x - Step 2: Convert to fraction form
139,414.99/192,393.87 = 75,752.79/x - Step 3: Cross multiply
139,414.99x = 192,393.87 × 75,752.79 - Step 4: Simplify right side
139,414.99x = 14,574,371,425.85 - Step 5: Solve for x
x = 14,574,371,425.85/139,414.99 - Step 6: Final answer
x = 104,539.49
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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.