Finding the Fourth Proportional to 112,790.24, 155,580.12 and 72,556.48
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Solution
The fourth proportional to 112,790.24, 155,580.12 and 72,556.48 is: 100,082.65
Step by Step Solution
- Step 1: Write the proportion equation
112,790.24 : 155,580.12 = 72,556.48 : x - Step 2: Convert to fraction form
112,790.24/155,580.12 = 72,556.48/x - Step 3: Cross multiply
112,790.24x = 155,580.12 × 72,556.48 - Step 4: Simplify right side
112,790.24x = 11,288,345,865.18 - Step 5: Solve for x
x = 11,288,345,865.18/112,790.24 - Step 6: Final answer
x = 100,082.65
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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.