Finding the Fourth Proportional to 129,963.96, 194,945.94 and 83,512.08
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Solution
The fourth proportional to 129,963.96, 194,945.94 and 83,512.08 is: 125,268.12
Step by Step Solution
- Step 1: Write the proportion equation
129,963.96 : 194,945.94 = 83,512.08 : x - Step 2: Convert to fraction form
129,963.96/194,945.94 = 83,512.08/x - Step 3: Cross multiply
129,963.96x = 194,945.94 × 83,512.08 - Step 4: Simplify right side
129,963.96x = 16,280,340,936.96 - Step 5: Solve for x
x = 16,280,340,936.96/129,963.96 - Step 6: Final answer
x = 125,268.12
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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.