Finding the Fourth Proportional to 156,209.40, 215,569.26 and 92,578.68
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Solution
The fourth proportional to 156,209.40, 215,569.26 and 92,578.68 is: 127,758.75
Step by Step Solution
- Step 1: Write the proportion equation
156,209.40 : 215,569.26 = 92,578.68 : x - Step 2: Convert to fraction form
156,209.40/215,569.26 = 92,578.68/x - Step 3: Cross multiply
156,209.40x = 215,569.26 × 92,578.68 - Step 4: Simplify right side
156,209.40x = 19,957,117,539.38 - Step 5: Solve for x
x = 19,957,117,539.38/156,209.40 - Step 6: Final answer
x = 127,758.75
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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.