Finding the Fourth Proportional to 121,902.24, 168,328.92 and 76,655.94
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Solution
The fourth proportional to 121,902.24, 168,328.92 and 76,655.94 is: 105,850.49
Step by Step Solution
- Step 1: Write the proportion equation
121,902.24 : 168,328.92 = 76,655.94 : x - Step 2: Convert to fraction form
121,902.24/168,328.92 = 76,655.94/x - Step 3: Cross multiply
121,902.24x = 168,328.92 × 76,655.94 - Step 4: Simplify right side
121,902.24x = 12,903,411,591.78 - Step 5: Solve for x
x = 12,903,411,591.78/121,902.24 - Step 6: Final answer
x = 105,850.49
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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.