Finding the Fourth Proportional to 112,537.80, 168,806.70 and 68,141.70
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Solution
The fourth proportional to 112,537.80, 168,806.70 and 68,141.70 is: 102,212.55
Step by Step Solution
- Step 1: Write the proportion equation
112,537.80 : 168,806.70 = 68,141.70 : x - Step 2: Convert to fraction form
112,537.80/168,806.70 = 68,141.70/x - Step 3: Cross multiply
112,537.80x = 168,806.70 × 68,141.70 - Step 4: Simplify right side
112,537.80x = 11,502,775,509.39 - Step 5: Solve for x
x = 11,502,775,509.39/112,537.80 - Step 6: Final answer
x = 102,212.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.