Finding the Fourth Proportional to 121,811.08, 168,102.75 and 68,102.14
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Solution
The fourth proportional to 121,811.08, 168,102.75 and 68,102.14 is: 93,982.89
Step by Step Solution
- Step 1: Write the proportion equation
121,811.08 : 168,102.75 = 68,102.14 : x - Step 2: Convert to fraction form
121,811.08/168,102.75 = 68,102.14/x - Step 3: Cross multiply
121,811.08x = 168,102.75 × 68,102.14 - Step 4: Simplify right side
121,811.08x = 11,448,157,014.89 - Step 5: Solve for x
x = 11,448,157,014.89/121,811.08 - Step 6: Final answer
x = 93,982.89
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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.