Finding the Fourth Proportional to 121,983.75, 168,344.99 and 68,267.65
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Solution
The fourth proportional to 121,983.75, 168,344.99 and 68,267.65 is: 94,213.51
Step by Step Solution
- Step 1: Write the proportion equation
121,983.75 : 168,344.99 = 68,267.65 : x - Step 2: Convert to fraction form
121,983.75/168,344.99 = 68,267.65/x - Step 3: Cross multiply
121,983.75x = 168,344.99 × 68,267.65 - Step 4: Simplify right side
121,983.75x = 11,492,516,856.57 - Step 5: Solve for x
x = 11,492,516,856.57/121,983.75 - Step 6: Final answer
x = 94,213.51
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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.