Finding the Fourth Proportional to 159,811.69, 220,533.21 and 87,212.74
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Solution
The fourth proportional to 159,811.69, 220,533.21 and 87,212.74 is: 120,349.80
Step by Step Solution
- Step 1: Write the proportion equation
159,811.69 : 220,533.21 = 87,212.74 : x - Step 2: Convert to fraction form
159,811.69/220,533.21 = 87,212.74/x - Step 3: Cross multiply
159,811.69x = 220,533.21 × 87,212.74 - Step 4: Simplify right side
159,811.69x = 19,233,305,505.10 - Step 5: Solve for x
x = 19,233,305,505.10/159,811.69 - Step 6: Final answer
x = 120,349.80
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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.