Finding the Fourth Proportional to 138,023.40, 206,516.70 and 125,581.80
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Solution
The fourth proportional to 138,023.40, 206,516.70 and 125,581.80 is: 187,901.03
Step by Step Solution
- Step 1: Write the proportion equation
138,023.40 : 206,516.70 = 125,581.80 : x - Step 2: Convert to fraction form
138,023.40/206,516.70 = 125,581.80/x - Step 3: Cross multiply
138,023.40x = 206,516.70 × 125,581.80 - Step 4: Simplify right side
138,023.40x = 25,934,738,916.06 - Step 5: Solve for x
x = 25,934,738,916.06/138,023.40 - Step 6: Final answer
x = 187,901.03
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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.