Finding the Fourth Proportional to 121,818.08, 168,108.18 and 68,102.84
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Solution
The fourth proportional to 121,818.08, 168,108.18 and 68,102.84 is: 93,981.49
Step by Step Solution
- Step 1: Write the proportion equation
121,818.08 : 168,108.18 = 68,102.84 : x - Step 2: Convert to fraction form
121,818.08/168,108.18 = 68,102.84/x - Step 3: Cross multiply
121,818.08x = 168,108.18 × 68,102.84 - Step 4: Simplify right side
121,818.08x = 11,448,644,485.23 - Step 5: Solve for x
x = 11,448,644,485.23/121,818.08 - Step 6: Final answer
x = 93,981.49
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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.