Finding the Fourth Proportional to 90,245.36, 135,220.08 and 63,902.82
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Solution
The fourth proportional to 90,245.36, 135,220.08 and 63,902.82 is: 95,749.46
Step by Step Solution
- Step 1: Write the proportion equation
90,245.36 : 135,220.08 = 63,902.82 : x - Step 2: Convert to fraction form
90,245.36/135,220.08 = 63,902.82/x - Step 3: Cross multiply
90,245.36x = 135,220.08 × 63,902.82 - Step 4: Simplify right side
90,245.36x = 8,640,944,432.63 - Step 5: Solve for x
x = 8,640,944,432.63/90,245.36 - Step 6: Final answer
x = 95,749.46
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Double scale
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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.