Finding the Fourth Proportional to 135,426.08, 186,771.92 and 81,699.36
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Solution
The fourth proportional to 135,426.08, 186,771.92 and 81,699.36 is: 112,675.09
Step by Step Solution
- Step 1: Write the proportion equation
135,426.08 : 186,771.92 = 81,699.36 : x - Step 2: Convert to fraction form
135,426.08/186,771.92 = 81,699.36/x - Step 3: Cross multiply
135,426.08x = 186,771.92 × 81,699.36 - Step 4: Simplify right side
135,426.08x = 15,259,146,329.97 - Step 5: Solve for x
x = 15,259,146,329.97/135,426.08 - Step 6: Final answer
x = 112,675.09
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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.