Finding the Fourth Proportional to 100,211.73, 138,225.73 and 64,446.99
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Solution
The fourth proportional to 100,211.73, 138,225.73 and 64,446.99 is: 88,894.11
Step by Step Solution
- Step 1: Write the proportion equation
100,211.73 : 138,225.73 = 64,446.99 : x - Step 2: Convert to fraction form
100,211.73/138,225.73 = 64,446.99/x - Step 3: Cross multiply
100,211.73x = 138,225.73 × 64,446.99 - Step 4: Simplify right side
100,211.73x = 8,908,232,239.05 - Step 5: Solve for x
x = 8,908,232,239.05/100,211.73 - Step 6: Final answer
x = 88,894.11
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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.