Finding the Fourth Proportional to 124,286.12, 171,628.26 and 79,651.88
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Solution
The fourth proportional to 124,286.12, 171,628.26 and 79,651.88 is: 109,992.28
Step by Step Solution
- Step 1: Write the proportion equation
124,286.12 : 171,628.26 = 79,651.88 : x - Step 2: Convert to fraction form
124,286.12/171,628.26 = 79,651.88/x - Step 3: Cross multiply
124,286.12x = 171,628.26 × 79,651.88 - Step 4: Simplify right side
124,286.12x = 13,670,513,570.13 - Step 5: Solve for x
x = 13,670,513,570.13/124,286.12 - Step 6: Final answer
x = 109,992.28
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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.