Finding the Fourth Proportional to 126,681.36, 189,643.19 and 76,609.92
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Solution
The fourth proportional to 126,681.36, 189,643.19 and 76,609.92 is: 114,685.77
Step by Step Solution
- Step 1: Write the proportion equation
126,681.36 : 189,643.19 = 76,609.92 : x - Step 2: Convert to fraction form
126,681.36/189,643.19 = 76,609.92/x - Step 3: Cross multiply
126,681.36x = 189,643.19 × 76,609.92 - Step 4: Simplify right side
126,681.36x = 14,528,549,614.44 - Step 5: Solve for x
x = 14,528,549,614.44/126,681.36 - Step 6: Final answer
x = 114,685.77
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.