Finding the Fourth Proportional to 208,628.47, 287,907.36 and 113,135.14
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Solution
The fourth proportional to 208,628.47, 287,907.36 and 113,135.14 is: 156,126.53
Step by Step Solution
- Step 1: Write the proportion equation
208,628.47 : 287,907.36 = 113,135.14 : x - Step 2: Convert to fraction form
208,628.47/287,907.36 = 113,135.14/x - Step 3: Cross multiply
208,628.47x = 287,907.36 × 113,135.14 - Step 4: Simplify right side
208,628.47x = 32,572,438,114.97 - Step 5: Solve for x
x = 32,572,438,114.97/208,628.47 - Step 6: Final answer
x = 156,126.53
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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.