Finding the Fourth Proportional to 140,399.27, 193,728.58 and 79,971.09
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Solution
The fourth proportional to 140,399.27, 193,728.58 and 79,971.09 is: 110,347.34
Step by Step Solution
- Step 1: Write the proportion equation
140,399.27 : 193,728.58 = 79,971.09 : x - Step 2: Convert to fraction form
140,399.27/193,728.58 = 79,971.09/x - Step 3: Cross multiply
140,399.27x = 193,728.58 × 79,971.09 - Step 4: Simplify right side
140,399.27x = 15,492,685,706.75 - Step 5: Solve for x
x = 15,492,685,706.75/140,399.27 - Step 6: Final answer
x = 110,347.34
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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.