Finding the Fourth Proportional to 252,110.75, 347,920.13 and 138,940.79
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Solution
The fourth proportional to 252,110.75, 347,920.13 and 138,940.79 is: 191,742.31
Step by Step Solution
- Step 1: Write the proportion equation
252,110.75 : 347,920.13 = 138,940.79 : x - Step 2: Convert to fraction form
252,110.75/347,920.13 = 138,940.79/x - Step 3: Cross multiply
252,110.75x = 347,920.13 × 138,940.79 - Step 4: Simplify right side
252,110.75x = 48,340,297,719.10 - Step 5: Solve for x
x = 48,340,297,719.10/252,110.75 - Step 6: Final answer
x = 191,742.31
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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.