Finding the Fourth Proportional to 157,377.09, 217,177.56 and 85,757.70
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Solution
The fourth proportional to 157,377.09, 217,177.56 and 85,757.70 is: 118,344.09
Step by Step Solution
- Step 1: Write the proportion equation
157,377.09 : 217,177.56 = 85,757.70 : x - Step 2: Convert to fraction form
157,377.09/217,177.56 = 85,757.70/x - Step 3: Cross multiply
157,377.09x = 217,177.56 × 85,757.70 - Step 4: Simplify right side
157,377.09x = 18,624,648,037.21 - Step 5: Solve for x
x = 18,624,648,037.21/157,377.09 - Step 6: Final answer
x = 118,344.09
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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.