Finding the Fourth Proportional to 120,305.58, 166,021.85 and 74,983.53
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Solution
The fourth proportional to 120,305.58, 166,021.85 and 74,983.53 is: 103,477.36
Step by Step Solution
- Step 1: Write the proportion equation
120,305.58 : 166,021.85 = 74,983.53 : x - Step 2: Convert to fraction form
120,305.58/166,021.85 = 74,983.53/x - Step 3: Cross multiply
120,305.58x = 166,021.85 × 74,983.53 - Step 4: Simplify right side
120,305.58x = 12,448,904,370.13 - Step 5: Solve for x
x = 12,448,904,370.13/120,305.58 - Step 6: Final answer
x = 103,477.36
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1.5x scale
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.