Finding the Fourth Proportional to 107,664.20, 161,204.70 and 84,336.20
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Solution
The fourth proportional to 107,664.20, 161,204.70 and 84,336.20 is: 126,275.88
Step by Step Solution
- Step 1: Write the proportion equation
107,664.20 : 161,204.70 = 84,336.20 : x - Step 2: Convert to fraction form
107,664.20/161,204.70 = 84,336.20/x - Step 3: Cross multiply
107,664.20x = 161,204.70 × 84,336.20 - Step 4: Simplify right side
107,664.20x = 13,595,391,820.14 - Step 5: Solve for x
x = 13,595,391,820.14/107,664.20 - Step 6: Final answer
x = 126,275.88
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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.