Finding the Fourth Proportional to 135,387.63, 186,827.49 and 80,940.87
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Solution
The fourth proportional to 135,387.63, 186,827.49 and 80,940.87 is: 111,693.95
Step by Step Solution
- Step 1: Write the proportion equation
135,387.63 : 186,827.49 = 80,940.87 : x - Step 2: Convert to fraction form
135,387.63/186,827.49 = 80,940.87/x - Step 3: Cross multiply
135,387.63x = 186,827.49 × 80,940.87 - Step 4: Simplify right side
135,387.63x = 15,121,979,580.52 - Step 5: Solve for x
x = 15,121,979,580.52/135,387.63 - Step 6: Final answer
x = 111,693.95
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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.