Finding the Fourth Proportional to 156,689.19, 216,225.18 and 85,067.66
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Solution
The fourth proportional to 156,689.19, 216,225.18 and 85,067.66 is: 117,390.17
Step by Step Solution
- Step 1: Write the proportion equation
156,689.19 : 216,225.18 = 85,067.66 : x - Step 2: Convert to fraction form
156,689.19/216,225.18 = 85,067.66/x - Step 3: Cross multiply
156,689.19x = 216,225.18 × 85,067.66 - Step 4: Simplify right side
156,689.19x = 18,393,770,636.24 - Step 5: Solve for x
x = 18,393,770,636.24/156,689.19 - Step 6: Final answer
x = 117,390.17
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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.