Finding the Fourth Proportional to 131,299.92, 181,209.12 and 73,939.80
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Solution
The fourth proportional to 131,299.92, 181,209.12 and 73,939.80 is: 102,045.50
Step by Step Solution
- Step 1: Write the proportion equation
131,299.92 : 181,209.12 = 73,939.80 : x - Step 2: Convert to fraction form
131,299.92/181,209.12 = 73,939.80/x - Step 3: Cross multiply
131,299.92x = 181,209.12 × 73,939.80 - Step 4: Simplify right side
131,299.92x = 13,398,566,090.98 - Step 5: Solve for x
x = 13,398,566,090.98/131,299.92 - Step 6: Final answer
x = 102,045.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.