Finding the Fourth Proportional to 139,591.18, 192,670.05 and 79,197.18
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Solution
The fourth proportional to 139,591.18, 192,670.05 and 79,197.18 is: 109,311.52
Step by Step Solution
- Step 1: Write the proportion equation
139,591.18 : 192,670.05 = 79,197.18 : x - Step 2: Convert to fraction form
139,591.18/192,670.05 = 79,197.18/x - Step 3: Cross multiply
139,591.18x = 192,670.05 × 79,197.18 - Step 4: Simplify right side
139,591.18x = 15,258,923,950.79 - Step 5: Solve for x
x = 15,258,923,950.79/139,591.18 - Step 6: Final answer
x = 109,311.52
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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.