Finding the Fourth Proportional to 135,458.96, 186,940.12 and 81,743.08
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Solution
The fourth proportional to 135,458.96, 186,940.12 and 81,743.08 is: 112,809.53
Step by Step Solution
- Step 1: Write the proportion equation
135,458.96 : 186,940.12 = 81,743.08 : x - Step 2: Convert to fraction form
135,458.96/186,940.12 = 81,743.08/x - Step 3: Cross multiply
135,458.96x = 186,940.12 × 81,743.08 - Step 4: Simplify right side
135,458.96x = 15,281,061,184.37 - Step 5: Solve for x
x = 15,281,061,184.37/135,458.96 - Step 6: Final answer
x = 112,809.53
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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.