Finding the Fourth Proportional to 120,811.05, 166,740.98 and 69,816.74
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Solution
The fourth proportional to 120,811.05, 166,740.98 and 69,816.74 is: 96,359.65
Step by Step Solution
- Step 1: Write the proportion equation
120,811.05 : 166,740.98 = 69,816.74 : x - Step 2: Convert to fraction form
120,811.05/166,740.98 = 69,816.74/x - Step 3: Cross multiply
120,811.05x = 166,740.98 × 69,816.74 - Step 4: Simplify right side
120,811.05x = 11,641,310,465.22 - Step 5: Solve for x
x = 11,641,310,465.22/120,811.05 - Step 6: Final answer
x = 96,359.65
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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.