Finding the Fourth Proportional to 137,021.99, 189,066.16 and 76,573.31
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Solution
The fourth proportional to 137,021.99, 189,066.16 and 76,573.31 is: 105,657.65
Step by Step Solution
- Step 1: Write the proportion equation
137,021.99 : 189,066.16 = 76,573.31 : x - Step 2: Convert to fraction form
137,021.99/189,066.16 = 76,573.31/x - Step 3: Cross multiply
137,021.99x = 189,066.16 × 76,573.31 - Step 4: Simplify right side
137,021.99x = 14,477,421,680.19 - Step 5: Solve for x
x = 14,477,421,680.19/137,021.99 - Step 6: Final answer
x = 105,657.65
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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.