Finding the Fourth Proportional to 149,270.21, 205,990.84 and 84,738.88
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Solution
The fourth proportional to 149,270.21, 205,990.84 and 84,738.88 is: 116,938.48
Step by Step Solution
- Step 1: Write the proportion equation
149,270.21 : 205,990.84 = 84,738.88 : x - Step 2: Convert to fraction form
149,270.21/205,990.84 = 84,738.88/x - Step 3: Cross multiply
149,270.21x = 205,990.84 × 84,738.88 - Step 4: Simplify right side
149,270.21x = 17,455,431,618.21 - Step 5: Solve for x
x = 17,455,431,618.21/149,270.21 - Step 6: Final answer
x = 116,938.48
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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.