Finding the Fourth Proportional to 154,174.71, 212,796.63 and 100,365.99
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Solution
The fourth proportional to 154,174.71, 212,796.63 and 100,365.99 is: 138,528.20
Step by Step Solution
- Step 1: Write the proportion equation
154,174.71 : 212,796.63 = 100,365.99 : x - Step 2: Convert to fraction form
154,174.71/212,796.63 = 100,365.99/x - Step 3: Cross multiply
154,174.71x = 212,796.63 × 100,365.99 - Step 4: Simplify right side
154,174.71x = 21,357,544,438.61 - Step 5: Solve for x
x = 21,357,544,438.61/154,174.71 - Step 6: Final answer
x = 138,528.20
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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.