Finding the Fourth Proportional to 201,989.88, 278,713.44 and 121,398.12
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Solution
The fourth proportional to 201,989.88, 278,713.44 and 121,398.12 is: 167,509.82
Step by Step Solution
- Step 1: Write the proportion equation
201,989.88 : 278,713.44 = 121,398.12 : x - Step 2: Convert to fraction form
201,989.88/278,713.44 = 121,398.12/x - Step 3: Cross multiply
201,989.88x = 278,713.44 × 121,398.12 - Step 4: Simplify right side
201,989.88x = 33,835,287,634.73 - Step 5: Solve for x
x = 33,835,287,634.73/201,989.88 - Step 6: Final answer
x = 167,509.82
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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.