Finding the Fourth Proportional to 163,540.20, 245,310.30 and 128,110.80
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Solution
The fourth proportional to 163,540.20, 245,310.30 and 128,110.80 is: 192,166.20
Step by Step Solution
- Step 1: Write the proportion equation
163,540.20 : 245,310.30 = 128,110.80 : x - Step 2: Convert to fraction form
163,540.20/245,310.30 = 128,110.80/x - Step 3: Cross multiply
163,540.20x = 245,310.30 × 128,110.80 - Step 4: Simplify right side
163,540.20x = 31,426,898,781.24 - Step 5: Solve for x
x = 31,426,898,781.24/163,540.20 - Step 6: Final answer
x = 192,166.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.