Finding the Fourth Proportional to 121,936.79, 168,269.81 and 68,226.91
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Solution
The fourth proportional to 121,936.79, 168,269.81 and 68,226.91 is: 94,151.47
Step by Step Solution
- Step 1: Write the proportion equation
121,936.79 : 168,269.81 = 68,226.91 : x - Step 2: Convert to fraction form
121,936.79/168,269.81 = 68,226.91/x - Step 3: Cross multiply
121,936.79x = 168,269.81 × 68,226.91 - Step 4: Simplify right side
121,936.79x = 11,480,528,420.78 - Step 5: Solve for x
x = 11,480,528,420.78/121,936.79 - Step 6: Final answer
x = 94,151.47
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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.