Finding the Fourth Proportional to 128,373,851.92, 192,652,716.96 and 54,649,320.40
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Solution
The fourth proportional to 128,373,851.92, 192,652,716.96 and 54,649,320.40 is: 82,013,119.48
Step by Step Solution
- Step 1: Write the proportion equation
128,373,851.92 : 192,652,716.96 = 54,649,320.40 : x - Step 2: Convert to fraction form
128,373,851.92/192,652,716.96 = 54,649,320.40/x - Step 3: Cross multiply
128,373,851.92x = 192,652,716.96 × 54,649,320.40 - Step 4: Simplify right side
128,373,851.92x = 10,528,340,055,077,554 - Step 5: Solve for x
x = 10,528,340,055,077,554/128,373,851.92 - Step 6: Final answer
x = 82,013,119.48
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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.