Finding the Fourth Proportional to 126,564.48, 189,752.99 and 76,632.84
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Solution
The fourth proportional to 126,564.48, 189,752.99 and 76,632.84 is: 114,892.50
Step by Step Solution
- Step 1: Write the proportion equation
126,564.48 : 189,752.99 = 76,632.84 : x - Step 2: Convert to fraction form
126,564.48/189,752.99 = 76,632.84/x - Step 3: Cross multiply
126,564.48x = 189,752.99 × 76,632.84 - Step 4: Simplify right side
126,564.48x = 14,541,310,139.03 - Step 5: Solve for x
x = 14,541,310,139.03/126,564.48 - Step 6: Final answer
x = 114,892.50
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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.