Finding the Fourth Proportional to 156,696.18, 216,239.49 and 85,074.75
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Solution
The fourth proportional to 156,696.18, 216,239.49 and 85,074.75 is: 117,402.48
Step by Step Solution
- Step 1: Write the proportion equation
156,696.18 : 216,239.49 = 85,074.75 : x - Step 2: Convert to fraction form
156,696.18/216,239.49 = 85,074.75/x - Step 3: Cross multiply
156,696.18x = 216,239.49 × 85,074.75 - Step 4: Simplify right side
156,696.18x = 18,396,520,551.88 - Step 5: Solve for x
x = 18,396,520,551.88/156,696.18 - Step 6: Final answer
x = 117,402.48
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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.