Finding the Fourth Proportional to 112,475.52, 155,220.84 and 64,728.99
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Solution
The fourth proportional to 112,475.52, 155,220.84 and 64,728.99 is: 89,328.67
Step by Step Solution
- Step 1: Write the proportion equation
112,475.52 : 155,220.84 = 64,728.99 : x - Step 2: Convert to fraction form
112,475.52/155,220.84 = 64,728.99/x - Step 3: Cross multiply
112,475.52x = 155,220.84 × 64,728.99 - Step 4: Simplify right side
112,475.52x = 10,047,288,200.15 - Step 5: Solve for x
x = 10,047,288,200.15/112,475.52 - Step 6: Final answer
x = 89,328.67
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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.