Finding the Fourth Proportional to 149,253.20, 205,958.99 and 84,723.74
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Solution
The fourth proportional to 149,253.20, 205,958.99 and 84,723.74 is: 116,912.84
Step by Step Solution
- Step 1: Write the proportion equation
149,253.20 : 205,958.99 = 84,723.74 : x - Step 2: Convert to fraction form
149,253.20/205,958.99 = 84,723.74/x - Step 3: Cross multiply
149,253.20x = 205,958.99 × 84,723.74 - Step 4: Simplify right side
149,253.20x = 17,449,614,466.01 - Step 5: Solve for x
x = 17,449,614,466.01/149,253.20 - Step 6: Final answer
x = 116,912.84
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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.