Finding the Fourth Proportional to 85,915.93, 128,968.17 and 68,260.08
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Solution
The fourth proportional to 85,915.93, 128,968.17 and 68,260.08 is: 102,465.03
Step by Step Solution
- Step 1: Write the proportion equation
85,915.93 : 128,968.17 = 68,260.08 : x - Step 2: Convert to fraction form
85,915.93/128,968.17 = 68,260.08/x - Step 3: Cross multiply
85,915.93x = 128,968.17 × 68,260.08 - Step 4: Simplify right side
85,915.93x = 8,803,377,601.65 - Step 5: Solve for x
x = 8,803,377,601.65/85,915.93 - Step 6: Final answer
x = 102,465.03
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1.5x scale
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.