Finding the Fourth Proportional to 128,482.44, 177,306.16 and 71,893.68
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Solution
The fourth proportional to 128,482.44, 177,306.16 and 71,893.68 is: 99,213.50
Step by Step Solution
- Step 1: Write the proportion equation
128,482.44 : 177,306.16 = 71,893.68 : x - Step 2: Convert to fraction form
128,482.44/177,306.16 = 71,893.68/x - Step 3: Cross multiply
128,482.44x = 177,306.16 × 71,893.68 - Step 4: Simplify right side
128,482.44x = 12,747,192,329.07 - Step 5: Solve for x
x = 12,747,192,329.07/128,482.44 - Step 6: Final answer
x = 99,213.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.