Finding the Fourth Proportional to 153,760,391.62, 212,189,202.96 and 86,793,446.14
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Solution
The fourth proportional to 153,760,391.62, 212,189,202.96 and 86,793,446.14 is: 119,774,878.07
Step by Step Solution
- Step 1: Write the proportion equation
153,760,391.62 : 212,189,202.96 = 86,793,446.14 : x - Step 2: Convert to fraction form
153,760,391.62/212,189,202.96 = 86,793,446.14/x - Step 3: Cross multiply
153,760,391.62x = 212,189,202.96 × 86,793,446.14 - Step 4: Simplify right side
153,760,391.62x = 18,416,632,158,598,288 - Step 5: Solve for x
x = 18,416,632,158,598,288/153,760,391.62 - Step 6: Final answer
x = 119,774,878.07
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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.