Finding the Fourth Proportional to 141,090.40, 194,711.84 and 77,427.68
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Solution
The fourth proportional to 141,090.40, 194,711.84 and 77,427.68 is: 106,854.09
Step by Step Solution
- Step 1: Write the proportion equation
141,090.40 : 194,711.84 = 77,427.68 : x - Step 2: Convert to fraction form
141,090.40/194,711.84 = 77,427.68/x - Step 3: Cross multiply
141,090.40x = 194,711.84 × 77,427.68 - Step 4: Simplify right side
141,090.40x = 15,076,086,039.73 - Step 5: Solve for x
x = 15,076,086,039.73/141,090.40 - Step 6: Final answer
x = 106,854.09
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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.