Finding the Fourth Proportional to 121,720.48, 167,977.68 and 68,011.44
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Solution
The fourth proportional to 121,720.48, 167,977.68 and 68,011.44 is: 93,857.70
Step by Step Solution
- Step 1: Write the proportion equation
121,720.48 : 167,977.68 = 68,011.44 : x - Step 2: Convert to fraction form
121,720.48/167,977.68 = 68,011.44/x - Step 3: Cross multiply
121,720.48x = 167,977.68 × 68,011.44 - Step 4: Simplify right side
121,720.48x = 11,424,403,904.66 - Step 5: Solve for x
x = 11,424,403,904.66/121,720.48 - Step 6: Final answer
x = 93,857.70
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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.