Finding the Fourth Proportional to 155,147.70, 232,721.55 and 76,415.70
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Solution
The fourth proportional to 155,147.70, 232,721.55 and 76,415.70 is: 114,623.55
Step by Step Solution
- Step 1: Write the proportion equation
155,147.70 : 232,721.55 = 76,415.70 : x - Step 2: Convert to fraction form
155,147.70/232,721.55 = 76,415.70/x - Step 3: Cross multiply
155,147.70x = 232,721.55 × 76,415.70 - Step 4: Simplify right side
155,147.70x = 17,783,580,148.34 - Step 5: Solve for x
x = 17,783,580,148.34/155,147.70 - Step 6: Final answer
x = 114,623.55
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1.5x scale
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.