Finding the Fourth Proportional to 135,638.98, 187,193.05 and 75,229.08
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Solution
The fourth proportional to 135,638.98, 187,193.05 and 75,229.08 is: 103,822.37
Step by Step Solution
- Step 1: Write the proportion equation
135,638.98 : 187,193.05 = 75,229.08 : x - Step 2: Convert to fraction form
135,638.98/187,193.05 = 75,229.08/x - Step 3: Cross multiply
135,638.98x = 187,193.05 × 75,229.08 - Step 4: Simplify right side
135,638.98x = 14,082,360,933.89 - Step 5: Solve for x
x = 14,082,360,933.89/135,638.98 - Step 6: Final answer
x = 103,822.37
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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.