Finding the Fourth Proportional to 121,920.17, 168,250.08 and 68,206.08
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Solution
The fourth proportional to 121,920.17, 168,250.08 and 68,206.08 is: 94,124.53
Step by Step Solution
- Step 1: Write the proportion equation
121,920.17 : 168,250.08 = 68,206.08 : x - Step 2: Convert to fraction form
121,920.17/168,250.08 = 68,206.08/x - Step 3: Cross multiply
121,920.17x = 168,250.08 × 68,206.08 - Step 4: Simplify right side
121,920.17x = 11,475,678,416.49 - Step 5: Solve for x
x = 11,475,678,416.49/121,920.17 - Step 6: Final answer
x = 94,124.53
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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.