Finding the Fourth Proportional to 131,112.18, 180,933.12 and 74,519.82
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Solution
The fourth proportional to 131,112.18, 180,933.12 and 74,519.82 is: 102,836.39
Step by Step Solution
- Step 1: Write the proportion equation
131,112.18 : 180,933.12 = 74,519.82 : x - Step 2: Convert to fraction form
131,112.18/180,933.12 = 74,519.82/x - Step 3: Cross multiply
131,112.18x = 180,933.12 × 74,519.82 - Step 4: Simplify right side
131,112.18x = 13,483,103,534.44 - Step 5: Solve for x
x = 13,483,103,534.44/131,112.18 - Step 6: Final answer
x = 102,836.39
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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.