Finding the Fourth Proportional to 159,431.63, 220,025.63 and 87,811.62
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Solution
The fourth proportional to 159,431.63, 220,025.63 and 87,811.62 is: 121,185.53
Step by Step Solution
- Step 1: Write the proportion equation
159,431.63 : 220,025.63 = 87,811.62 : x - Step 2: Convert to fraction form
159,431.63/220,025.63 = 87,811.62/x - Step 3: Cross multiply
159,431.63x = 220,025.63 × 87,811.62 - Step 4: Simplify right side
159,431.63x = 19,320,806,572.76 - Step 5: Solve for x
x = 19,320,806,572.76/159,431.63 - Step 6: Final answer
x = 121,185.53
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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.