Finding the Fourth Proportional to 198,575.57, 274,036.11 and 107,931.74
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Solution
The fourth proportional to 198,575.57, 274,036.11 and 107,931.74 is: 148,946.79
Step by Step Solution
- Step 1: Write the proportion equation
198,575.57 : 274,036.11 = 107,931.74 : x - Step 2: Convert to fraction form
198,575.57/274,036.11 = 107,931.74/x - Step 3: Cross multiply
198,575.57x = 274,036.11 × 107,931.74 - Step 4: Simplify right side
198,575.57x = 29,577,194,175.13 - Step 5: Solve for x
x = 29,577,194,175.13/198,575.57 - Step 6: Final answer
x = 148,946.79
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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.