Finding the Fourth Proportional to 154,932.80, 213,811.09 and 86,954.96
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Solution
The fourth proportional to 154,932.80, 213,811.09 and 86,954.96 is: 119,999.99
Step by Step Solution
- Step 1: Write the proportion equation
154,932.80 : 213,811.09 = 86,954.96 : x - Step 2: Convert to fraction form
154,932.80/213,811.09 = 86,954.96/x - Step 3: Cross multiply
154,932.80x = 213,811.09 × 86,954.96 - Step 4: Simplify right side
154,932.80x = 18,591,934,259.80 - Step 5: Solve for x
x = 18,591,934,259.80/154,932.80 - Step 6: Final answer
x = 119,999.99
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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.