Finding the Fourth Proportional to 105,432.98, 157,974.50 and 74,202.62
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Solution
The fourth proportional to 105,432.98, 157,974.50 and 74,202.62 is: 111,180.79
Step by Step Solution
- Step 1: Write the proportion equation
105,432.98 : 157,974.50 = 74,202.62 : x - Step 2: Convert to fraction form
105,432.98/157,974.50 = 74,202.62/x - Step 3: Cross multiply
105,432.98x = 157,974.50 × 74,202.62 - Step 4: Simplify right side
105,432.98x = 11,722,121,188.82 - Step 5: Solve for x
x = 11,722,121,188.82/105,432.98 - Step 6: Final answer
x = 111,180.79
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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.