Finding the Fourth Proportional to 145,891.75, 201,330.66 and 78,823.75
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Solution
The fourth proportional to 145,891.75, 201,330.66 and 78,823.75 is: 108,776.80
Step by Step Solution
- Step 1: Write the proportion equation
145,891.75 : 201,330.66 = 78,823.75 : x - Step 2: Convert to fraction form
145,891.75/201,330.66 = 78,823.75/x - Step 3: Cross multiply
145,891.75x = 201,330.66 × 78,823.75 - Step 4: Simplify right side
145,891.75x = 15,869,637,611.18 - Step 5: Solve for x
x = 15,869,637,611.18/145,891.75 - Step 6: Final answer
x = 108,776.80
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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.