Finding the Fourth Proportional to 154,711.24, 213,494.94 and 87,643.24
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Solution
The fourth proportional to 154,711.24, 213,494.94 and 87,643.24 is: 120,943.95
Step by Step Solution
- Step 1: Write the proportion equation
154,711.24 : 213,494.94 = 87,643.24 : x - Step 2: Convert to fraction form
154,711.24/213,494.94 = 87,643.24/x - Step 3: Cross multiply
154,711.24x = 213,494.94 × 87,643.24 - Step 4: Simplify right side
154,711.24x = 18,711,388,265.21 - Step 5: Solve for x
x = 18,711,388,265.21/154,711.24 - Step 6: Final answer
x = 120,943.95
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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.