Finding the Fourth Proportional to 128,903.10, 193,308.42 and 44,640.63
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Solution
The fourth proportional to 128,903.10, 193,308.42 and 44,640.63 is: 66,944.94
Step by Step Solution
- Step 1: Write the proportion equation
128,903.10 : 193,308.42 = 44,640.63 : x - Step 2: Convert to fraction form
128,903.10/193,308.42 = 44,640.63/x - Step 3: Cross multiply
128,903.10x = 193,308.42 × 44,640.63 - Step 4: Simplify right side
128,903.10x = 8,629,409,653.10 - Step 5: Solve for x
x = 8,629,409,653.10/128,903.10 - Step 6: Final answer
x = 66,944.94
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.