Finding the Fourth Proportional to 153,743.26, 212,165.74 and 86,675.26
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Solution
The fourth proportional to 153,743.26, 212,165.74 and 86,675.26 is: 119,611.88
Step by Step Solution
- Step 1: Write the proportion equation
153,743.26 : 212,165.74 = 86,675.26 : x - Step 2: Convert to fraction form
153,743.26/212,165.74 = 86,675.26/x - Step 3: Cross multiply
153,743.26x = 212,165.74 × 86,675.26 - Step 4: Simplify right side
153,743.26x = 18,389,520,677.59 - Step 5: Solve for x
x = 18,389,520,677.59/153,743.26 - Step 6: Final answer
x = 119,611.88
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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.