Finding the Fourth Proportional to 100,651.05, 138,896.85 and 55,328.07
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Solution
The fourth proportional to 100,651.05, 138,896.85 and 55,328.07 is: 76,351.86
Step by Step Solution
- Step 1: Write the proportion equation
100,651.05 : 138,896.85 = 55,328.07 : x - Step 2: Convert to fraction form
100,651.05/138,896.85 = 55,328.07/x - Step 3: Cross multiply
100,651.05x = 138,896.85 × 55,328.07 - Step 4: Simplify right side
100,651.05x = 7,684,894,639.58 - Step 5: Solve for x
x = 7,684,894,639.58/100,651.05 - Step 6: Final answer
x = 76,351.86
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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.