Finding the Fourth Proportional to 99,242.40, 148,530.90 and 81,472.08
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Solution
The fourth proportional to 99,242.40, 148,530.90 and 81,472.08 is: 121,934.99
Step by Step Solution
- Step 1: Write the proportion equation
99,242.40 : 148,530.90 = 81,472.08 : x - Step 2: Convert to fraction form
99,242.40/148,530.90 = 81,472.08/x - Step 3: Cross multiply
99,242.40x = 148,530.90 × 81,472.08 - Step 4: Simplify right side
99,242.40x = 12,101,121,367.27 - Step 5: Solve for x
x = 12,101,121,367.27/99,242.40 - Step 6: Final answer
x = 121,934.99
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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.