Finding the Fourth Proportional to 252,107.91, 347,907.15 and 138,930.66
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Solution
The fourth proportional to 252,107.91, 347,907.15 and 138,930.66 is: 191,723.34
Step by Step Solution
- Step 1: Write the proportion equation
252,107.91 : 347,907.15 = 138,930.66 : x - Step 2: Convert to fraction form
252,107.91/347,907.15 = 138,930.66/x - Step 3: Cross multiply
252,107.91x = 347,907.15 × 138,930.66 - Step 4: Simplify right side
252,107.91x = 48,334,969,968.22 - Step 5: Solve for x
x = 48,334,969,968.22/252,107.91 - Step 6: Final answer
x = 191,723.34
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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.