Finding the Fourth Proportional to 100,618.02, 138,850.03 and 55,295.99
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Solution
The fourth proportional to 100,618.02, 138,850.03 and 55,295.99 is: 76,306.91
Step by Step Solution
- Step 1: Write the proportion equation
100,618.02 : 138,850.03 = 55,295.99 : x - Step 2: Convert to fraction form
100,618.02/138,850.03 = 55,295.99/x - Step 3: Cross multiply
100,618.02x = 138,850.03 × 55,295.99 - Step 4: Simplify right side
100,618.02x = 7,677,849,870.38 - Step 5: Solve for x
x = 7,677,849,870.38/100,618.02 - Step 6: Final answer
x = 76,306.91
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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.