Finding the Fourth Proportional to 105,424.41, 157,961.66 and 74,194.05
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Solution
The fourth proportional to 105,424.41, 157,961.66 and 74,194.05 is: 111,167.95
Step by Step Solution
- Step 1: Write the proportion equation
105,424.41 : 157,961.66 = 74,194.05 : x - Step 2: Convert to fraction form
105,424.41/157,961.66 = 74,194.05/x - Step 3: Cross multiply
105,424.41x = 157,961.66 × 74,194.05 - Step 4: Simplify right side
105,424.41x = 11,719,815,300.12 - Step 5: Solve for x
x = 11,719,815,300.12/105,424.41 - Step 6: Final answer
x = 111,167.95
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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.