Finding the Fourth Proportional to 120,646.77, 166,492.74 and 66,931.79
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Solution
The fourth proportional to 120,646.77, 166,492.74 and 66,931.79 is: 92,365.99
Step by Step Solution
- Step 1: Write the proportion equation
120,646.77 : 166,492.74 = 66,931.79 : x - Step 2: Convert to fraction form
120,646.77/166,492.74 = 66,931.79/x - Step 3: Cross multiply
120,646.77x = 166,492.74 × 66,931.79 - Step 4: Simplify right side
120,646.77x = 11,143,657,745.27 - Step 5: Solve for x
x = 11,143,657,745.27/120,646.77 - Step 6: Final answer
x = 92,365.99
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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.