Finding the Fourth Proportional to 157,636.13, 217,543.11 and 86,020.08
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Solution
The fourth proportional to 157,636.13, 217,543.11 and 86,020.08 is: 118,710.58
Step by Step Solution
- Step 1: Write the proportion equation
157,636.13 : 217,543.11 = 86,020.08 : x - Step 2: Convert to fraction form
157,636.13/217,543.11 = 86,020.08/x - Step 3: Cross multiply
157,636.13x = 217,543.11 × 86,020.08 - Step 4: Simplify right side
157,636.13x = 18,713,076,294.83 - Step 5: Solve for x
x = 18,713,076,294.83/157,636.13 - Step 6: Final answer
x = 118,710.58
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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.