Finding the Fourth Proportional to 153,797,694.14, 212,242,141.46 and 87,721,539.34
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Solution
The fourth proportional to 153,797,694.14, 212,242,141.46 and 87,721,539.34 is: 121,056,479.20
Step by Step Solution
- Step 1: Write the proportion equation
153,797,694.14 : 212,242,141.46 = 87,721,539.34 : x - Step 2: Convert to fraction form
153,797,694.14/212,242,141.46 = 87,721,539.34/x - Step 3: Cross multiply
153,797,694.14x = 212,242,141.46 × 87,721,539.34 - Step 4: Simplify right side
153,797,694.14x = 18,618,207,361,377,936 - Step 5: Solve for x
x = 18,618,207,361,377,936/153,797,694.14 - Step 6: Final answer
x = 121,056,479.20
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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.