Finding the Fourth Proportional to 138,555.81, 207,861.86 and 43,800.80
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Solution
The fourth proportional to 138,555.81, 207,861.86 and 43,800.80 is: 65,710.09
Step by Step Solution
- Step 1: Write the proportion equation
138,555.81 : 207,861.86 = 43,800.80 : x - Step 2: Convert to fraction form
138,555.81/207,861.86 = 43,800.80/x - Step 3: Cross multiply
138,555.81x = 207,861.86 × 43,800.80 - Step 4: Simplify right side
138,555.81x = 9,104,514,827.68 - Step 5: Solve for x
x = 9,104,514,827.68/138,555.81 - Step 6: Final answer
x = 65,710.09
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1.5x scale
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.