Finding the Fourth Proportional to 147,725.78, 221,258.19 and 68,721.62
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Solution
The fourth proportional to 147,725.78, 221,258.19 and 68,721.62 is: 102,928.69
Step by Step Solution
- Step 1: Write the proportion equation
147,725.78 : 221,258.19 = 68,721.62 : x - Step 2: Convert to fraction form
147,725.78/221,258.19 = 68,721.62/x - Step 3: Cross multiply
147,725.78x = 221,258.19 × 68,721.62 - Step 4: Simplify right side
147,725.78x = 15,205,221,255.07 - Step 5: Solve for x
x = 15,205,221,255.07/147,725.78 - Step 6: Final answer
x = 102,928.69
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.