Finding the Fourth Proportional to 128,373,850.92, 192,652,715.46 and 54,649,319.40
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Solution
The fourth proportional to 128,373,850.92, 192,652,715.46 and 54,649,319.40 is: 82,013,117.98
Step by Step Solution
- Step 1: Write the proportion equation
128,373,850.92 : 192,652,715.46 = 54,649,319.40 : x - Step 2: Convert to fraction form
128,373,850.92/192,652,715.46 = 54,649,319.40/x - Step 3: Cross multiply
128,373,850.92x = 192,652,715.46 × 54,649,319.40 - Step 4: Simplify right side
128,373,850.92x = 10,528,339,780,450,858 - Step 5: Solve for x
x = 10,528,339,780,450,858/128,373,850.92 - Step 6: Final answer
x = 82,013,117.98
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.