Finding the Fourth Proportional to 108,893.44, 163,456.80 and 85,682.08
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Solution
The fourth proportional to 108,893.44, 163,456.80 and 85,682.08 is: 128,614.90
Step by Step Solution
- Step 1: Write the proportion equation
108,893.44 : 163,456.80 = 85,682.08 : x - Step 2: Convert to fraction form
108,893.44/163,456.80 = 85,682.08/x - Step 3: Cross multiply
108,893.44x = 163,456.80 × 85,682.08 - Step 4: Simplify right side
108,893.44x = 14,005,318,614.14 - Step 5: Solve for x
x = 14,005,318,614.14/108,893.44 - Step 6: Final answer
x = 128,614.90
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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.