Finding the Fourth Proportional to 103,163.81, 142,391.35 and 62,899.75
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Solution
The fourth proportional to 103,163.81, 142,391.35 and 62,899.75 is: 86,817.08
Step by Step Solution
- Step 1: Write the proportion equation
103,163.81 : 142,391.35 = 62,899.75 : x - Step 2: Convert to fraction form
103,163.81/142,391.35 = 62,899.75/x - Step 3: Cross multiply
103,163.81x = 142,391.35 × 62,899.75 - Step 4: Simplify right side
103,163.81x = 8,956,380,573.78 - Step 5: Solve for x
x = 8,956,380,573.78/103,163.81 - Step 6: Final answer
x = 86,817.08
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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.