Finding the Fourth Proportional to 100,201.42, 138,278.88 and 68,369.63
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Solution
The fourth proportional to 100,201.42, 138,278.88 and 68,369.63 is: 94,350.72
Step by Step Solution
- Step 1: Write the proportion equation
100,201.42 : 138,278.88 = 68,369.63 : x - Step 2: Convert to fraction form
100,201.42/138,278.88 = 68,369.63/x - Step 3: Cross multiply
100,201.42x = 138,278.88 × 68,369.63 - Step 4: Simplify right side
100,201.42x = 9,454,076,208.11 - Step 5: Solve for x
x = 9,454,076,208.11/100,201.42 - Step 6: Final answer
x = 94,350.72
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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.