Finding the Fourth Proportional to 161,750.49, 223,212.66 and 90,128.99
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Solution
The fourth proportional to 161,750.49, 223,212.66 and 90,128.99 is: 124,376.33
Step by Step Solution
- Step 1: Write the proportion equation
161,750.49 : 223,212.66 = 90,128.99 : x - Step 2: Convert to fraction form
161,750.49/223,212.66 = 90,128.99/x - Step 3: Cross multiply
161,750.49x = 223,212.66 × 90,128.99 - Step 4: Simplify right side
161,750.49x = 20,117,931,601.01 - Step 5: Solve for x
x = 20,117,931,601.01/161,750.49 - Step 6: Final answer
x = 124,376.33
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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.