Finding the Fourth Proportional to 153,902.24, 212,358.78 and 85,915.70
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Solution
The fourth proportional to 153,902.24, 212,358.78 and 85,915.70 is: 118,548.98
Step by Step Solution
- Step 1: Write the proportion equation
153,902.24 : 212,358.78 = 85,915.70 : x - Step 2: Convert to fraction form
153,902.24/212,358.78 = 85,915.70/x - Step 3: Cross multiply
153,902.24x = 212,358.78 × 85,915.70 - Step 4: Simplify right side
153,902.24x = 18,244,953,234.85 - Step 5: Solve for x
x = 18,244,953,234.85/153,902.24 - Step 6: Final answer
x = 118,548.98
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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.