Finding the Fourth Proportional to 128,043.80, 192,065.70 and 128,043.80
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Solution
The fourth proportional to 128,043.80, 192,065.70 and 128,043.80 is: 192,065.70
Step by Step Solution
- Step 1: Write the proportion equation
128,043.80 : 192,065.70 = 128,043.80 : x - Step 2: Convert to fraction form
128,043.80/192,065.70 = 128,043.80/x - Step 3: Cross multiply
128,043.80x = 192,065.70 × 128,043.80 - Step 4: Simplify right side
128,043.80x = 24,592,822,077.66 - Step 5: Solve for x
x = 24,592,822,077.66/128,043.80 - Step 6: Final answer
x = 192,065.70
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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.