Finding the Fourth Proportional to 157,369.92, 217,163.70 and 89,386.68
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Solution
The fourth proportional to 157,369.92, 217,163.70 and 89,386.68 is: 123,349.76
Step by Step Solution
- Step 1: Write the proportion equation
157,369.92 : 217,163.70 = 89,386.68 : x - Step 2: Convert to fraction form
157,369.92/217,163.70 = 89,386.68/x - Step 3: Cross multiply
157,369.92x = 217,163.70 × 89,386.68 - Step 4: Simplify right side
157,369.92x = 19,411,542,111.71 - Step 5: Solve for x
x = 19,411,542,111.71/157,369.92 - Step 6: Final answer
x = 123,349.76
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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.