Finding the Fourth Proportional to 147,744,141.40, 221,616,212.10 and 86,522,138.20
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Solution
The fourth proportional to 147,744,141.40, 221,616,212.10 and 86,522,138.20 is: 129,783,207.30
Step by Step Solution
- Step 1: Write the proportion equation
147,744,141.40 : 221,616,212.10 = 86,522,138.20 : x - Step 2: Convert to fraction form
147,744,141.40/221,616,212.10 = 86,522,138.20/x - Step 3: Cross multiply
147,744,141.40x = 221,616,212.10 × 86,522,138.20 - Step 4: Simplify right side
147,744,141.40x = 19,174,708,530,676,712 - Step 5: Solve for x
x = 19,174,708,530,676,712/147,744,141.40 - Step 6: Final answer
x = 129,783,207.30
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.