Finding the Fourth Proportional to 121,137.70, 181,706.55 and 61,953.70
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Solution
The fourth proportional to 121,137.70, 181,706.55 and 61,953.70 is: 92,930.55
Step by Step Solution
- Step 1: Write the proportion equation
121,137.70 : 181,706.55 = 61,953.70 : x - Step 2: Convert to fraction form
121,137.70/181,706.55 = 61,953.70/x - Step 3: Cross multiply
121,137.70x = 181,706.55 × 61,953.70 - Step 4: Simplify right side
121,137.70x = 11,257,393,086.74 - Step 5: Solve for x
x = 11,257,393,086.74/121,137.70 - Step 6: Final answer
x = 92,930.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.