Finding the Fourth Proportional to 199,915.12, 299,724.54 and 121,010.68
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Solution
The fourth proportional to 199,915.12, 299,724.54 and 121,010.68 is: 181,426.35
Step by Step Solution
- Step 1: Write the proportion equation
199,915.12 : 299,724.54 = 121,010.68 : x - Step 2: Convert to fraction form
199,915.12/299,724.54 = 121,010.68/x - Step 3: Cross multiply
199,915.12x = 299,724.54 × 121,010.68 - Step 4: Simplify right side
199,915.12x = 36,269,870,398.09 - Step 5: Solve for x
x = 36,269,870,398.09/199,915.12 - Step 6: Final answer
x = 181,426.35
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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.