Finding the Fourth Proportional to 121,000.68, 166,981.14 and 67,285.14
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Solution
The fourth proportional to 121,000.68, 166,981.14 and 67,285.14 is: 92,853.61
Step by Step Solution
- Step 1: Write the proportion equation
121,000.68 : 166,981.14 = 67,285.14 : x - Step 2: Convert to fraction form
121,000.68/166,981.14 = 67,285.14/x - Step 3: Cross multiply
121,000.68x = 166,981.14 × 67,285.14 - Step 4: Simplify right side
121,000.68x = 11,235,349,382.26 - Step 5: Solve for x
x = 11,235,349,382.26/121,000.68 - Step 6: Final answer
x = 92,853.61
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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.