Finding the Fourth Proportional to 100,652.63, 138,845.21 and 63,791.42
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Solution
The fourth proportional to 100,652.63, 138,845.21 and 63,791.42 is: 87,997.03
Step by Step Solution
- Step 1: Write the proportion equation
100,652.63 : 138,845.21 = 63,791.42 : x - Step 2: Convert to fraction form
100,652.63/138,845.21 = 63,791.42/x - Step 3: Cross multiply
100,652.63x = 138,845.21 × 63,791.42 - Step 4: Simplify right side
100,652.63x = 8,857,133,264.42 - Step 5: Solve for x
x = 8,857,133,264.42/100,652.63 - Step 6: Final answer
x = 87,997.03
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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.