Finding the Fourth Proportional to 135,459.68, 186,939.55 and 75,029.03
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Solution
The fourth proportional to 135,459.68, 186,939.55 and 75,029.03 is: 103,542.94
Step by Step Solution
- Step 1: Write the proportion equation
135,459.68 : 186,939.55 = 75,029.03 : x - Step 2: Convert to fraction form
135,459.68/186,939.55 = 75,029.03/x - Step 3: Cross multiply
135,459.68x = 186,939.55 × 75,029.03 - Step 4: Simplify right side
135,459.68x = 14,025,892,965.25 - Step 5: Solve for x
x = 14,025,892,965.25/135,459.68 - Step 6: Final answer
x = 103,542.94
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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.