Finding the Fourth Proportional to 116.78, 161.06 and 73.08
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Solution
The fourth proportional to 116.78, 161.06 and 73.08 is: 100.79
Step by Step Solution
- Step 1: Write the proportion equation
116.78 : 161.06 = 73.08 : x - Step 2: Convert to fraction form
116.78/161.06 = 73.08/x - Step 3: Cross multiply
116.78x = 161.06 × 73.08 - Step 4: Simplify right side
116.78x = 11,769.90 - Step 5: Solve for x
x = 11,769.90/116.78 - Step 6: Final answer
x = 100.79
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.