Finding the Fourth Proportional to 100,911.12, 139,257.36 and 58,494.26
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Solution
The fourth proportional to 100,911.12, 139,257.36 and 58,494.26 is: 80,722.09
Step by Step Solution
- Step 1: Write the proportion equation
100,911.12 : 139,257.36 = 58,494.26 : x - Step 2: Convert to fraction form
100,911.12/139,257.36 = 58,494.26/x - Step 3: Cross multiply
100,911.12x = 139,257.36 × 58,494.26 - Step 4: Simplify right side
100,911.12x = 8,145,756,222.75 - Step 5: Solve for x
x = 8,145,756,222.75/100,911.12 - Step 6: Final answer
x = 80,722.09
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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.