Finding the Fourth Proportional to 128,859.18, 193,242.42 and 44,596.47
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Solution
The fourth proportional to 128,859.18, 193,242.42 and 44,596.47 is: 66,878.66
Step by Step Solution
- Step 1: Write the proportion equation
128,859.18 : 193,242.42 = 44,596.47 : x - Step 2: Convert to fraction form
128,859.18/193,242.42 = 44,596.47/x - Step 3: Cross multiply
128,859.18x = 193,242.42 × 44,596.47 - Step 4: Simplify right side
128,859.18x = 8,617,929,786.26 - Step 5: Solve for x
x = 8,617,929,786.26/128,859.18 - Step 6: Final answer
x = 66,878.66
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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.