Finding the Fourth Proportional to 135,640.36, 187,181.58 and 75,211.12
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Solution
The fourth proportional to 135,640.36, 187,181.58 and 75,211.12 is: 103,790.17
Step by Step Solution
- Step 1: Write the proportion equation
135,640.36 : 187,181.58 = 75,211.12 : x - Step 2: Convert to fraction form
135,640.36/187,181.58 = 75,211.12/x - Step 3: Cross multiply
135,640.36x = 187,181.58 × 75,211.12 - Step 4: Simplify right side
135,640.36x = 14,078,136,275.17 - Step 5: Solve for x
x = 14,078,136,275.17/135,640.36 - Step 6: Final answer
x = 103,790.17
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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.