Finding the Fourth Proportional to 122,294.81, 168,767.35 and 71,342.78
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Solution
The fourth proportional to 122,294.81, 168,767.35 and 71,342.78 is: 98,453.32
Step by Step Solution
- Step 1: Write the proportion equation
122,294.81 : 168,767.35 = 71,342.78 : x - Step 2: Convert to fraction form
122,294.81/168,767.35 = 71,342.78/x - Step 3: Cross multiply
122,294.81x = 168,767.35 × 71,342.78 - Step 4: Simplify right side
122,294.81x = 12,040,330,900.04 - Step 5: Solve for x
x = 12,040,330,900.04/122,294.81 - Step 6: Final answer
x = 98,453.32
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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.