Finding the Fourth Proportional to 133,115.44, 183,706.79 and 72,691.70
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Solution
The fourth proportional to 133,115.44, 183,706.79 and 72,691.70 is: 100,318.63
Step by Step Solution
- Step 1: Write the proportion equation
133,115.44 : 183,706.79 = 72,691.70 : x - Step 2: Convert to fraction form
133,115.44/183,706.79 = 72,691.70/x - Step 3: Cross multiply
133,115.44x = 183,706.79 × 72,691.70 - Step 4: Simplify right side
133,115.44x = 13,353,958,866.64 - Step 5: Solve for x
x = 13,353,958,866.64/133,115.44 - Step 6: Final answer
x = 100,318.63
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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.