Finding the Fourth Proportional to 120,763.49, 166,652.98 and 66,316.70
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Solution
The fourth proportional to 120,763.49, 166,652.98 and 66,316.70 is: 91,516.70
Step by Step Solution
- Step 1: Write the proportion equation
120,763.49 : 166,652.98 = 66,316.70 : x - Step 2: Convert to fraction form
120,763.49/166,652.98 = 66,316.70/x - Step 3: Cross multiply
120,763.49x = 166,652.98 × 66,316.70 - Step 4: Simplify right side
120,763.49x = 11,051,875,929.61 - Step 5: Solve for x
x = 11,051,875,929.61/120,763.49 - Step 6: Final answer
x = 91,516.70
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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.