Finding the Fourth Proportional to 216,632.52, 298,961.01 and 121,138.99
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Solution
The fourth proportional to 216,632.52, 298,961.01 and 121,138.99 is: 167,176.35
Step by Step Solution
- Step 1: Write the proportion equation
216,632.52 : 298,961.01 = 121,138.99 : x - Step 2: Convert to fraction form
216,632.52/298,961.01 = 121,138.99/x - Step 3: Cross multiply
216,632.52x = 298,961.01 × 121,138.99 - Step 4: Simplify right side
216,632.52x = 36,215,834,053.38 - Step 5: Solve for x
x = 36,215,834,053.38/216,632.52 - Step 6: Final answer
x = 167,176.35
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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.