Finding the Fourth Proportional to 126,311.81, 189,466.99 and 31,541.81
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Solution
The fourth proportional to 126,311.81, 189,466.99 and 31,541.81 is: 47,312.53
Step by Step Solution
- Step 1: Write the proportion equation
126,311.81 : 189,466.99 = 31,541.81 : x - Step 2: Convert to fraction form
126,311.81/189,466.99 = 31,541.81/x - Step 3: Cross multiply
126,311.81x = 189,466.99 × 31,541.81 - Step 4: Simplify right side
126,311.81x = 5,976,130,773.66 - Step 5: Solve for x
x = 5,976,130,773.66/126,311.81 - Step 6: Final answer
x = 47,312.53
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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.