Finding the Fourth Proportional to 115,169.20, 158,938.40 and 64,181.99
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Solution
The fourth proportional to 115,169.20, 158,938.40 and 64,181.99 is: 88,573.89
Step by Step Solution
- Step 1: Write the proportion equation
115,169.20 : 158,938.40 = 64,181.99 : x - Step 2: Convert to fraction form
115,169.20/158,938.40 = 64,181.99/x - Step 3: Cross multiply
115,169.20x = 158,938.40 × 64,181.99 - Step 4: Simplify right side
115,169.20x = 10,200,983,357.22 - Step 5: Solve for x
x = 10,200,983,357.22/115,169.20 - Step 6: Final answer
x = 88,573.89
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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.