Finding the Fourth Proportional to 100,214.70, 138,307.95 and 57,774.75
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Solution
The fourth proportional to 100,214.70, 138,307.95 and 57,774.75 is: 79,735.88
Step by Step Solution
- Step 1: Write the proportion equation
100,214.70 : 138,307.95 = 57,774.75 : x - Step 2: Convert to fraction form
100,214.70/138,307.95 = 57,774.75/x - Step 3: Cross multiply
100,214.70x = 138,307.95 × 57,774.75 - Step 4: Simplify right side
100,214.70x = 7,990,707,234.26 - Step 5: Solve for x
x = 7,990,707,234.26/100,214.70 - Step 6: Final answer
x = 79,735.88
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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.