Finding the Fourth Proportional to 136,934.97, 188,937.88 and 79,540.19
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Solution
The fourth proportional to 136,934.97, 188,937.88 and 79,540.19 is: 109,746.65
Step by Step Solution
- Step 1: Write the proportion equation
136,934.97 : 188,937.88 = 79,540.19 : x - Step 2: Convert to fraction form
136,934.97/188,937.88 = 79,540.19/x - Step 3: Cross multiply
136,934.97x = 188,937.88 × 79,540.19 - Step 4: Simplify right side
136,934.97x = 15,028,154,873.40 - Step 5: Solve for x
x = 15,028,154,873.40/136,934.97 - Step 6: Final answer
x = 109,746.65
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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.