Finding the Fourth Proportional to 126,225.09, 189,157.20 and 92,681.98
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Solution
The fourth proportional to 126,225.09, 189,157.20 and 92,681.98 is: 138,890.48
Step by Step Solution
- Step 1: Write the proportion equation
126,225.09 : 189,157.20 = 92,681.98 : x - Step 2: Convert to fraction form
126,225.09/189,157.20 = 92,681.98/x - Step 3: Cross multiply
126,225.09x = 189,157.20 × 92,681.98 - Step 4: Simplify right side
126,225.09x = 17,531,463,827.26 - Step 5: Solve for x
x = 17,531,463,827.26/126,225.09 - Step 6: Final answer
x = 138,890.48
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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.