Finding the Fourth Proportional to 121,755.81, 168,026.64 and 68,040.99
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Solution
The fourth proportional to 121,755.81, 168,026.64 and 68,040.99 is: 93,898.58
Step by Step Solution
- Step 1: Write the proportion equation
121,755.81 : 168,026.64 = 68,040.99 : x - Step 2: Convert to fraction form
121,755.81/168,026.64 = 68,040.99/x - Step 3: Cross multiply
121,755.81x = 168,026.64 × 68,040.99 - Step 4: Simplify right side
121,755.81x = 11,432,698,491.29 - Step 5: Solve for x
x = 11,432,698,491.29/121,755.81 - Step 6: Final answer
x = 93,898.58
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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.