Finding the Fourth Proportional to 135,042.80, 202,691.28 and 68,530.64
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Solution
The fourth proportional to 135,042.80, 202,691.28 and 68,530.64 is: 102,860.45
Step by Step Solution
- Step 1: Write the proportion equation
135,042.80 : 202,691.28 = 68,530.64 : x - Step 2: Convert to fraction form
135,042.80/202,691.28 = 68,530.64/x - Step 3: Cross multiply
135,042.80x = 202,691.28 × 68,530.64 - Step 4: Simplify right side
135,042.80x = 13,890,563,140.82 - Step 5: Solve for x
x = 13,890,563,140.82/135,042.80 - Step 6: Final answer
x = 102,860.45
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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.