Finding the Fourth Proportional to 153,945.48, 212,388.60 and 90,270.96
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Solution
The fourth proportional to 153,945.48, 212,388.60 and 90,270.96 is: 124,540.99
Step by Step Solution
- Step 1: Write the proportion equation
153,945.48 : 212,388.60 = 90,270.96 : x - Step 2: Convert to fraction form
153,945.48/212,388.60 = 90,270.96/x - Step 3: Cross multiply
153,945.48x = 212,388.60 × 90,270.96 - Step 4: Simplify right side
153,945.48x = 19,172,522,815.06 - Step 5: Solve for x
x = 19,172,522,815.06/153,945.48 - Step 6: Final answer
x = 124,540.99
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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.