Finding the Fourth Proportional to 208,120.98, 287,207.84 and 112,627.68
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Solution
The fourth proportional to 208,120.98, 287,207.84 and 112,627.68 is: 155,426.68
Step by Step Solution
- Step 1: Write the proportion equation
208,120.98 : 287,207.84 = 112,627.68 : x - Step 2: Convert to fraction form
208,120.98/287,207.84 = 112,627.68/x - Step 3: Cross multiply
208,120.98x = 287,207.84 × 112,627.68 - Step 4: Simplify right side
208,120.98x = 32,347,552,697.01 - Step 5: Solve for x
x = 32,347,552,697.01/208,120.98 - Step 6: Final answer
x = 155,426.68
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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.