Finding the Fourth Proportional to 153,735.48, 212,154.12 and 85,753.08
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Solution
The fourth proportional to 153,735.48, 212,154.12 and 85,753.08 is: 118,338.78
Step by Step Solution
- Step 1: Write the proportion equation
153,735.48 : 212,154.12 = 85,753.08 : x - Step 2: Convert to fraction form
153,735.48/212,154.12 = 85,753.08/x - Step 3: Cross multiply
153,735.48x = 212,154.12 × 85,753.08 - Step 4: Simplify right side
153,735.48x = 18,192,869,224.69 - Step 5: Solve for x
x = 18,192,869,224.69/153,735.48 - Step 6: Final answer
x = 118,338.78
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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.