Finding the Fourth Proportional to 121,849.76, 182,774.64 and 68,545.28
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Solution
The fourth proportional to 121,849.76, 182,774.64 and 68,545.28 is: 102,817.92
Step by Step Solution
- Step 1: Write the proportion equation
121,849.76 : 182,774.64 = 68,545.28 : x - Step 2: Convert to fraction form
121,849.76/182,774.64 = 68,545.28/x - Step 3: Cross multiply
121,849.76x = 182,774.64 × 68,545.28 - Step 4: Simplify right side
121,849.76x = 12,528,338,875.70 - Step 5: Solve for x
x = 12,528,338,875.70/121,849.76 - Step 6: Final answer
x = 102,817.92
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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.