Finding the Fourth Proportional to 121,897.11, 168,214.95 and 68,184.39
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Solution
The fourth proportional to 121,897.11, 168,214.95 and 68,184.39 is: 94,092.75
Step by Step Solution
- Step 1: Write the proportion equation
121,897.11 : 168,214.95 = 68,184.39 : x - Step 2: Convert to fraction form
121,897.11/168,214.95 = 68,184.39/x - Step 3: Cross multiply
121,897.11x = 168,214.95 × 68,184.39 - Step 4: Simplify right side
121,897.11x = 11,469,633,754.63 - Step 5: Solve for x
x = 11,469,633,754.63/121,897.11 - Step 6: Final answer
x = 94,092.75
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1.5x scale
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.