Finding the Fourth Proportional to 107,680.40, 161,693.40 and 72,774.80
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Solution
The fourth proportional to 107,680.40, 161,693.40 and 72,774.80 is: 109,278.99
Step by Step Solution
- Step 1: Write the proportion equation
107,680.40 : 161,693.40 = 72,774.80 : x - Step 2: Convert to fraction form
107,680.40/161,693.40 = 72,774.80/x - Step 3: Cross multiply
107,680.40x = 161,693.40 × 72,774.80 - Step 4: Simplify right side
107,680.40x = 11,767,204,846.32 - Step 5: Solve for x
x = 11,767,204,846.32/107,680.40 - Step 6: Final answer
x = 109,278.99
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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.