Finding the Fourth Proportional to 157,399.05, 217,204.36 and 85,777.52
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Solution
The fourth proportional to 157,399.05, 217,204.36 and 85,777.52 is: 118,369.53
Step by Step Solution
- Step 1: Write the proportion equation
157,399.05 : 217,204.36 = 85,777.52 : x - Step 2: Convert to fraction form
157,399.05/217,204.36 = 85,777.52/x - Step 3: Cross multiply
157,399.05x = 217,204.36 × 85,777.52 - Step 4: Simplify right side
157,399.05x = 18,631,251,333.99 - Step 5: Solve for x
x = 18,631,251,333.99/157,399.05 - Step 6: Final answer
x = 118,369.53
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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.