Finding the Fourth Proportional to 121,416.68, 167,660.76 and 76,172.44
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Solution
The fourth proportional to 121,416.68, 167,660.76 and 76,172.44 is: 105,184.30
Step by Step Solution
- Step 1: Write the proportion equation
121,416.68 : 167,660.76 = 76,172.44 : x - Step 2: Convert to fraction form
121,416.68/167,660.76 = 76,172.44/x - Step 3: Cross multiply
121,416.68x = 167,660.76 × 76,172.44 - Step 4: Simplify right side
121,416.68x = 12,771,127,962.29 - Step 5: Solve for x
x = 12,771,127,962.29/121,416.68 - Step 6: Final answer
x = 105,184.30
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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.