Finding the Fourth Proportional to 155,151.70, 214,137.21 and 91,485.70
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Solution
The fourth proportional to 155,151.70, 214,137.21 and 91,485.70 is: 126,266.70
Step by Step Solution
- Step 1: Write the proportion equation
155,151.70 : 214,137.21 = 91,485.70 : x - Step 2: Convert to fraction form
155,151.70/214,137.21 = 91,485.70/x - Step 3: Cross multiply
155,151.70x = 214,137.21 × 91,485.70 - Step 4: Simplify right side
155,151.70x = 19,590,492,552.90 - Step 5: Solve for x
x = 19,590,492,552.90/155,151.70 - Step 6: Final answer
x = 126,266.70
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1.5x scale
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.