Finding the Fourth Proportional to 128,880.10, 193,320.15 and 126,911.80
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Solution
The fourth proportional to 128,880.10, 193,320.15 and 126,911.80 is: 190,367.70
Step by Step Solution
- Step 1: Write the proportion equation
128,880.10 : 193,320.15 = 126,911.80 : x - Step 2: Convert to fraction form
128,880.10/193,320.15 = 126,911.80/x - Step 3: Cross multiply
128,880.10x = 193,320.15 × 126,911.80 - Step 4: Simplify right side
128,880.10x = 24,534,608,212.77 - Step 5: Solve for x
x = 24,534,608,212.77/128,880.10 - Step 6: Final answer
x = 190,367.70
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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.