Finding the Fourth Proportional to 116,719.20, 161,065.89 and 68,976.99
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Solution
The fourth proportional to 116,719.20, 161,065.89 and 68,976.99 is: 95,184.34
Step by Step Solution
- Step 1: Write the proportion equation
116,719.20 : 161,065.89 = 68,976.99 : x - Step 2: Convert to fraction form
116,719.20/161,065.89 = 68,976.99/x - Step 3: Cross multiply
116,719.20x = 161,065.89 × 68,976.99 - Step 4: Simplify right side
116,719.20x = 11,109,840,283.87 - Step 5: Solve for x
x = 11,109,840,283.87/116,719.20 - Step 6: Final answer
x = 95,184.34
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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.