Finding the Fourth Proportional to 153,735.30, 212,154.96 and 85,756.68
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Solution
The fourth proportional to 153,735.30, 212,154.96 and 85,756.68 is: 118,344.36
Step by Step Solution
- Step 1: Write the proportion equation
153,735.30 : 212,154.96 = 85,756.68 : x - Step 2: Convert to fraction form
153,735.30/212,154.96 = 85,756.68/x - Step 3: Cross multiply
153,735.30x = 212,154.96 × 85,756.68 - Step 4: Simplify right side
153,735.30x = 18,193,705,015.13 - Step 5: Solve for x
x = 18,193,705,015.13/153,735.30 - Step 6: Final answer
x = 118,344.36
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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.