Finding the Fourth Proportional to 172,121.05, 237,453.38 and 107,478.06
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Solution
The fourth proportional to 172,121.05, 237,453.38 and 107,478.06 is: 148,273.72
Step by Step Solution
- Step 1: Write the proportion equation
172,121.05 : 237,453.38 = 107,478.06 : x - Step 2: Convert to fraction form
172,121.05/237,453.38 = 107,478.06/x - Step 3: Cross multiply
172,121.05x = 237,453.38 × 107,478.06 - Step 4: Simplify right side
172,121.05x = 25,521,029,299.28 - Step 5: Solve for x
x = 25,521,029,299.28/172,121.05 - Step 6: Final answer
x = 148,273.72
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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.