Finding the Fourth Proportional to 156,813.18, 216,403.08 and 85,193.82
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Solution
The fourth proportional to 156,813.18, 216,403.08 and 85,193.82 is: 117,567.96
Step by Step Solution
- Step 1: Write the proportion equation
156,813.18 : 216,403.08 = 85,193.82 : x - Step 2: Convert to fraction form
156,813.18/216,403.08 = 85,193.82/x - Step 3: Cross multiply
156,813.18x = 216,403.08 × 85,193.82 - Step 4: Simplify right side
156,813.18x = 18,436,205,044.97 - Step 5: Solve for x
x = 18,436,205,044.97/156,813.18 - Step 6: Final answer
x = 117,567.96
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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.