Finding the Fourth Proportional to 128,271.80, 192,407.70 and 114,493.70
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Solution
The fourth proportional to 128,271.80, 192,407.70 and 114,493.70 is: 171,740.55
Step by Step Solution
- Step 1: Write the proportion equation
128,271.80 : 192,407.70 = 114,493.70 : x - Step 2: Convert to fraction form
128,271.80/192,407.70 = 114,493.70/x - Step 3: Cross multiply
128,271.80x = 192,407.70 × 114,493.70 - Step 4: Simplify right side
128,271.80x = 22,029,469,481.49 - Step 5: Solve for x
x = 22,029,469,481.49/128,271.80 - Step 6: Final answer
x = 171,740.55
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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.