Finding the Fourth Proportional to 157,745.26, 217,686.81 and 86,125.06
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Solution
The fourth proportional to 157,745.26, 217,686.81 and 86,125.06 is: 118,851.68
Step by Step Solution
- Step 1: Write the proportion equation
157,745.26 : 217,686.81 = 86,125.06 : x - Step 2: Convert to fraction form
157,745.26/217,686.81 = 86,125.06/x - Step 3: Cross multiply
157,745.26x = 217,686.81 × 86,125.06 - Step 4: Simplify right side
157,745.26x = 18,748,289,572.46 - Step 5: Solve for x
x = 18,748,289,572.46/157,745.26 - Step 6: Final answer
x = 118,851.68
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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.