Finding the Fourth Proportional to 138,434.70, 193,939.80 and 138,434.70
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Solution
The fourth proportional to 138,434.70, 193,939.80 and 138,434.70 is: 193,939.80
Step by Step Solution
- Step 1: Write the proportion equation
138,434.70 : 193,939.80 = 138,434.70 : x - Step 2: Convert to fraction form
138,434.70/193,939.80 = 138,434.70/x - Step 3: Cross multiply
138,434.70x = 193,939.80 × 138,434.70 - Step 4: Simplify right side
138,434.70x = 26,847,998,031.06 - Step 5: Solve for x
x = 26,847,998,031.06/138,434.70 - Step 6: Final answer
x = 193,939.80
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.