Finding the Fourth Proportional to 138,186.96, 207,013.20 and 115,733.76
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Solution
The fourth proportional to 138,186.96, 207,013.20 and 115,733.76 is: 173,376.82
Step by Step Solution
- Step 1: Write the proportion equation
138,186.96 : 207,013.20 = 115,733.76 : x - Step 2: Convert to fraction form
138,186.96/207,013.20 = 115,733.76/x - Step 3: Cross multiply
138,186.96x = 207,013.20 × 115,733.76 - Step 4: Simplify right side
138,186.96x = 23,958,416,005.63 - Step 5: Solve for x
x = 23,958,416,005.63/138,186.96 - Step 6: Final answer
x = 173,376.82
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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.