Finding the Fourth Proportional to 157,261.23, 217,013.58 and 85,636.98
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Solution
The fourth proportional to 157,261.23, 217,013.58 and 85,636.98 is: 118,175.27
Step by Step Solution
- Step 1: Write the proportion equation
157,261.23 : 217,013.58 = 85,636.98 : x - Step 2: Convert to fraction form
157,261.23/217,013.58 = 85,636.98/x - Step 3: Cross multiply
157,261.23x = 217,013.58 × 85,636.98 - Step 4: Simplify right side
157,261.23x = 18,584,387,610.19 - Step 5: Solve for x
x = 18,584,387,610.19/157,261.23 - Step 6: Final answer
x = 118,175.27
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1.5x scale
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.