Finding the Fourth Proportional to 153,821.44, 212,273.60 and 86,753.44
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Solution
The fourth proportional to 153,821.44, 212,273.60 and 86,753.44 is: 119,719.75
Step by Step Solution
- Step 1: Write the proportion equation
153,821.44 : 212,273.60 = 86,753.44 : x - Step 2: Convert to fraction form
153,821.44/212,273.60 = 86,753.44/x - Step 3: Cross multiply
153,821.44x = 212,273.60 × 86,753.44 - Step 4: Simplify right side
153,821.44x = 18,415,465,021.18 - Step 5: Solve for x
x = 18,415,465,021.18/153,821.44 - Step 6: Final answer
x = 119,719.75
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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.