Finding the Fourth Proportional to 121,759.79, 168,029.13 and 68,045.70
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Solution
The fourth proportional to 121,759.79, 168,029.13 and 68,045.70 is: 93,903.41
Step by Step Solution
- Step 1: Write the proportion equation
121,759.79 : 168,029.13 = 68,045.70 : x - Step 2: Convert to fraction form
121,759.79/168,029.13 = 68,045.70/x - Step 3: Cross multiply
121,759.79x = 168,029.13 × 68,045.70 - Step 4: Simplify right side
121,759.79x = 11,433,659,137.22 - Step 5: Solve for x
x = 11,433,659,137.22/121,759.79 - Step 6: Final answer
x = 93,903.41
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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.