Finding the Fourth Proportional to 190,857.80, 286,286.70 and 112,125.80
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Solution
The fourth proportional to 190,857.80, 286,286.70 and 112,125.80 is: 168,188.70
Step by Step Solution
- Step 1: Write the proportion equation
190,857.80 : 286,286.70 = 112,125.80 : x - Step 2: Convert to fraction form
190,857.80/286,286.70 = 112,125.80/x - Step 3: Cross multiply
190,857.80x = 286,286.70 × 112,125.80 - Step 4: Simplify right side
190,857.80x = 32,100,125,266.86 - Step 5: Solve for x
x = 32,100,125,266.86/190,857.80 - Step 6: Final answer
x = 168,188.70
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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.