Finding the Fourth Proportional to 157,128.42, 235,686.92 and 68,381.96
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Solution
The fourth proportional to 157,128.42, 235,686.92 and 68,381.96 is: 102,570.46
Step by Step Solution
- Step 1: Write the proportion equation
157,128.42 : 235,686.92 = 68,381.96 : x - Step 2: Convert to fraction form
157,128.42/235,686.92 = 68,381.96/x - Step 3: Cross multiply
157,128.42x = 235,686.92 × 68,381.96 - Step 4: Simplify right side
157,128.42x = 16,116,733,535.96 - Step 5: Solve for x
x = 16,116,733,535.96/157,128.42 - Step 6: Final answer
x = 102,570.46
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.