Finding the Fourth Proportional to 117,771.52, 162,509.95 and 79,614.09
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Solution
The fourth proportional to 117,771.52, 162,509.95 and 79,614.09 is: 109,857.47
Step by Step Solution
- Step 1: Write the proportion equation
117,771.52 : 162,509.95 = 79,614.09 : x - Step 2: Convert to fraction form
117,771.52/162,509.95 = 79,614.09/x - Step 3: Cross multiply
117,771.52x = 162,509.95 × 79,614.09 - Step 4: Simplify right side
117,771.52x = 12,938,081,436.88 - Step 5: Solve for x
x = 12,938,081,436.88/117,771.52 - Step 6: Final answer
x = 109,857.47
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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.