Finding the Fourth Proportional to 121,711.87, 167,970.26 and 67,997.17
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Solution
The fourth proportional to 121,711.87, 167,970.26 and 67,997.17 is: 93,840.50
Step by Step Solution
- Step 1: Write the proportion equation
121,711.87 : 167,970.26 = 67,997.17 : x - Step 2: Convert to fraction form
121,711.87/167,970.26 = 67,997.17/x - Step 3: Cross multiply
121,711.87x = 167,970.26 × 67,997.17 - Step 4: Simplify right side
121,711.87x = 11,421,502,321.64 - Step 5: Solve for x
x = 11,421,502,321.64/121,711.87 - Step 6: Final answer
x = 93,840.50
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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.