Finding the Fourth Proportional to 100,622.08, 138,951.84 and 64,895.68
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Solution
The fourth proportional to 100,622.08, 138,951.84 and 64,895.68 is: 89,616.26
Step by Step Solution
- Step 1: Write the proportion equation
100,622.08 : 138,951.84 = 64,895.68 : x - Step 2: Convert to fraction form
100,622.08/138,951.84 = 64,895.68/x - Step 3: Cross multiply
100,622.08x = 138,951.84 × 64,895.68 - Step 4: Simplify right side
100,622.08x = 9,017,374,144.05 - Step 5: Solve for x
x = 9,017,374,144.05/100,622.08 - Step 6: Final answer
x = 89,616.26
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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.