Finding the Fourth Proportional to 121,933.13, 168,274.25 and 68,214.95
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Solution
The fourth proportional to 121,933.13, 168,274.25 and 68,214.95 is: 94,140.28
Step by Step Solution
- Step 1: Write the proportion equation
121,933.13 : 168,274.25 = 68,214.95 : x - Step 2: Convert to fraction form
121,933.13/168,274.25 = 68,214.95/x - Step 3: Cross multiply
121,933.13x = 168,274.25 × 68,214.95 - Step 4: Simplify right side
121,933.13x = 11,478,818,879.20 - Step 5: Solve for x
x = 11,478,818,879.20/121,933.13 - Step 6: Final answer
x = 94,140.28
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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.