Finding the Fourth Proportional to 135,381.40, 186,827.80 and 74,952.96
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Solution
The fourth proportional to 135,381.40, 186,827.80 and 74,952.96 is: 103,435.90
Step by Step Solution
- Step 1: Write the proportion equation
135,381.40 : 186,827.80 = 74,952.96 : x - Step 2: Convert to fraction form
135,381.40/186,827.80 = 74,952.96/x - Step 3: Cross multiply
135,381.40x = 186,827.80 × 74,952.96 - Step 4: Simplify right side
135,381.40x = 14,003,296,620.29 - Step 5: Solve for x
x = 14,003,296,620.29/135,381.40 - Step 6: Final answer
x = 103,435.90
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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.