Finding the Fourth Proportional to 155,879.99, 215,096.11 and 87,892.92
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Solution
The fourth proportional to 155,879.99, 215,096.11 and 87,892.92 is: 121,281.92
Step by Step Solution
- Step 1: Write the proportion equation
155,879.99 : 215,096.11 = 87,892.92 : x - Step 2: Convert to fraction form
155,879.99/215,096.11 = 87,892.92/x - Step 3: Cross multiply
155,879.99x = 215,096.11 × 87,892.92 - Step 4: Simplify right side
155,879.99x = 18,905,425,188.54 - Step 5: Solve for x
x = 18,905,425,188.54/155,879.99 - Step 6: Final answer
x = 121,281.92
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1.5x scale
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.