Finding the Fourth Proportional to 157,537.74, 217,407.36 and 85,921.68
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Solution
The fourth proportional to 157,537.74, 217,407.36 and 85,921.68 is: 118,574.80
Step by Step Solution
- Step 1: Write the proportion equation
157,537.74 : 217,407.36 = 85,921.68 : x - Step 2: Convert to fraction form
157,537.74/217,407.36 = 85,921.68/x - Step 3: Cross multiply
157,537.74x = 217,407.36 × 85,921.68 - Step 4: Simplify right side
157,537.74x = 18,680,005,615.56 - Step 5: Solve for x
x = 18,680,005,615.56/157,537.74 - Step 6: Final answer
x = 118,574.80
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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.