Finding the Fourth Proportional to 128,203,478.10, 192,305,217.15 and 37,330,031.70
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Solution
The fourth proportional to 128,203,478.10, 192,305,217.15 and 37,330,031.70 is: 55,995,047.55
Step by Step Solution
- Step 1: Write the proportion equation
128,203,478.10 : 192,305,217.15 = 37,330,031.70 : x - Step 2: Convert to fraction form
128,203,478.10/192,305,217.15 = 37,330,031.70/x - Step 3: Cross multiply
128,203,478.10x = 192,305,217.15 × 37,330,031.70 - Step 4: Simplify right side
128,203,478.10x = 7,178,759,852,284,884 - Step 5: Solve for x
x = 7,178,759,852,284,884/128,203,478.10 - Step 6: Final answer
x = 55,995,047.55
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1.5x scale
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.