Finding the Fourth Proportional to 135,218.55, 186,585.21 and 74,780.96
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Solution
The fourth proportional to 135,218.55, 186,585.21 and 74,780.96 is: 103,188.66
Step by Step Solution
- Step 1: Write the proportion equation
135,218.55 : 186,585.21 = 74,780.96 : x - Step 2: Convert to fraction form
135,218.55/186,585.21 = 74,780.96/x - Step 3: Cross multiply
135,218.55x = 186,585.21 × 74,780.96 - Step 4: Simplify right side
135,218.55x = 13,953,020,892.37 - Step 5: Solve for x
x = 13,953,020,892.37/135,218.55 - Step 6: Final answer
x = 103,188.66
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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.