Finding the Fourth Proportional to 153,721.62, 212,129.28 and 113,420.88
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Solution
The fourth proportional to 153,721.62, 212,129.28 and 113,420.88 is: 156,515.98
Step by Step Solution
- Step 1: Write the proportion equation
153,721.62 : 212,129.28 = 113,420.88 : x - Step 2: Convert to fraction form
153,721.62/212,129.28 = 113,420.88/x - Step 3: Cross multiply
153,721.62x = 212,129.28 × 113,420.88 - Step 4: Simplify right side
153,721.62x = 24,059,889,611.37 - Step 5: Solve for x
x = 24,059,889,611.37/153,721.62 - Step 6: Final answer
x = 156,515.98
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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.