Finding the Fourth Proportional to 157,395.96, 217,206.16 and 85,775.96
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Solution
The fourth proportional to 157,395.96, 217,206.16 and 85,775.96 is: 118,370.68
Step by Step Solution
- Step 1: Write the proportion equation
157,395.96 : 217,206.16 = 85,775.96 : x - Step 2: Convert to fraction form
157,395.96/217,206.16 = 85,775.96/x - Step 3: Cross multiply
157,395.96x = 217,206.16 × 85,775.96 - Step 4: Simplify right side
157,395.96x = 18,631,067,220.49 - Step 5: Solve for x
x = 18,631,067,220.49/157,395.96 - Step 6: Final answer
x = 118,370.68
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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.