Finding the Fourth Proportional to 112,621.34, 155,349.87 and 74,380.96
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Solution
The fourth proportional to 112,621.34, 155,349.87 and 74,380.96 is: 102,601.09
Step by Step Solution
- Step 1: Write the proportion equation
112,621.34 : 155,349.87 = 74,380.96 : x - Step 2: Convert to fraction form
112,621.34/155,349.87 = 74,380.96/x - Step 3: Cross multiply
112,621.34x = 155,349.87 × 74,380.96 - Step 4: Simplify right side
112,621.34x = 11,555,072,078.10 - Step 5: Solve for x
x = 11,555,072,078.10/112,621.34 - Step 6: Final answer
x = 102,601.09
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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.