Finding the Fourth Proportional to 139,146.12, 192,021.84 and 75,484.08
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Solution
The fourth proportional to 139,146.12, 192,021.84 and 75,484.08 is: 104,168.14
Step by Step Solution
- Step 1: Write the proportion equation
139,146.12 : 192,021.84 = 75,484.08 : x - Step 2: Convert to fraction form
139,146.12/192,021.84 = 75,484.08/x - Step 3: Cross multiply
139,146.12x = 192,021.84 × 75,484.08 - Step 4: Simplify right side
139,146.12x = 14,494,591,932.31 - Step 5: Solve for x
x = 14,494,591,932.31/139,146.12 - Step 6: Final answer
x = 104,168.14
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1.5x scale
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.