Finding the Fourth Proportional to 157,477.77, 217,321.58 and 85,861.42
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Solution
The fourth proportional to 157,477.77, 217,321.58 and 85,861.42 is: 118,489.99
Step by Step Solution
- Step 1: Write the proportion equation
157,477.77 : 217,321.58 = 85,861.42 : x - Step 2: Convert to fraction form
157,477.77/217,321.58 = 85,861.42/x - Step 3: Cross multiply
157,477.77x = 217,321.58 × 85,861.42 - Step 4: Simplify right side
157,477.77x = 18,659,539,126.79 - Step 5: Solve for x
x = 18,659,539,126.79/157,477.77 - Step 6: Final answer
x = 118,489.99
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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.