Finding the Fourth Proportional to 112,531.63, 155,152.50 and 72,174.19
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Solution
The fourth proportional to 112,531.63, 155,152.50 and 72,174.19 is: 99,509.85
Step by Step Solution
- Step 1: Write the proportion equation
112,531.63 : 155,152.50 = 72,174.19 : x - Step 2: Convert to fraction form
112,531.63/155,152.50 = 72,174.19/x - Step 3: Cross multiply
112,531.63x = 155,152.50 × 72,174.19 - Step 4: Simplify right side
112,531.63x = 11,198,006,013.98 - Step 5: Solve for x
x = 11,198,006,013.98/112,531.63 - Step 6: Final answer
x = 99,509.85
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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.