Finding the Fourth Proportional to 160,436.40, 221,404.84 and 87,838.08
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Solution
The fourth proportional to 160,436.40, 221,404.84 and 87,838.08 is: 121,217.98
Step by Step Solution
- Step 1: Write the proportion equation
160,436.40 : 221,404.84 = 87,838.08 : x - Step 2: Convert to fraction form
160,436.40/221,404.84 = 87,838.08/x - Step 3: Cross multiply
160,436.40x = 221,404.84 × 87,838.08 - Step 4: Simplify right side
160,436.40x = 19,447,776,048.31 - Step 5: Solve for x
x = 19,447,776,048.31/160,436.40 - Step 6: Final answer
x = 121,217.98
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1.5x scale
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.