Finding the Fourth Proportional to 157,369.95, 217,170.54 and 85,749.99
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Solution
The fourth proportional to 157,369.95, 217,170.54 and 85,749.99 is: 118,334.99
Step by Step Solution
- Step 1: Write the proportion equation
157,369.95 : 217,170.54 = 85,749.99 : x - Step 2: Convert to fraction form
157,369.95/217,170.54 = 85,749.99/x - Step 3: Cross multiply
157,369.95x = 217,170.54 × 85,749.99 - Step 4: Simplify right side
157,369.95x = 18,622,371,633.29 - Step 5: Solve for x
x = 18,622,371,633.29/157,369.95 - Step 6: Final answer
x = 118,334.99
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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.