Finding the Fourth Proportional to 140,067.99, 193,286.07 and 79,630.29
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Solution
The fourth proportional to 140,067.99, 193,286.07 and 79,630.29 is: 109,885.39
Step by Step Solution
- Step 1: Write the proportion equation
140,067.99 : 193,286.07 = 79,630.29 : x - Step 2: Convert to fraction form
140,067.99/193,286.07 = 79,630.29/x - Step 3: Cross multiply
140,067.99x = 193,286.07 × 79,630.29 - Step 4: Simplify right side
140,067.99x = 15,391,425,807.06 - Step 5: Solve for x
x = 15,391,425,807.06/140,067.99 - Step 6: Final answer
x = 109,885.39
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1.5x scale
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.