Finding the Fourth Proportional to 139,286.99, 192,220.67 and 78,035.81
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Solution
The fourth proportional to 139,286.99, 192,220.67 and 78,035.81 is: 107,692.00
Step by Step Solution
- Step 1: Write the proportion equation
139,286.99 : 192,220.67 = 78,035.81 : x - Step 2: Convert to fraction form
139,286.99/192,220.67 = 78,035.81/x - Step 3: Cross multiply
139,286.99x = 192,220.67 × 78,035.81 - Step 4: Simplify right side
139,286.99x = 15,000,094,696.70 - Step 5: Solve for x
x = 15,000,094,696.70/139,286.99 - Step 6: Final answer
x = 107,692.00
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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.