Finding the Fourth Proportional to 138,809.76, 207,703.11 and 98,163.15
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Solution
The fourth proportional to 138,809.76, 207,703.11 and 98,163.15 is: 146,882.98
Step by Step Solution
- Step 1: Write the proportion equation
138,809.76 : 207,703.11 = 98,163.15 : x - Step 2: Convert to fraction form
138,809.76/207,703.11 = 98,163.15/x - Step 3: Cross multiply
138,809.76x = 207,703.11 × 98,163.15 - Step 4: Simplify right side
138,809.76x = 20,388,791,542.40 - Step 5: Solve for x
x = 20,388,791,542.40/138,809.76 - Step 6: Final answer
x = 146,882.98
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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.