Finding the Fourth Proportional to 112,356.74, 155,049.57 and 64,608.99
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Solution
The fourth proportional to 112,356.74, 155,049.57 and 64,608.99 is: 89,158.84
Step by Step Solution
- Step 1: Write the proportion equation
112,356.74 : 155,049.57 = 64,608.99 : x - Step 2: Convert to fraction form
112,356.74/155,049.57 = 64,608.99/x - Step 3: Cross multiply
112,356.74x = 155,049.57 × 64,608.99 - Step 4: Simplify right side
112,356.74x = 10,017,596,117.63 - Step 5: Solve for x
x = 10,017,596,117.63/112,356.74 - Step 6: Final answer
x = 89,158.84
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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.