Finding the Fourth Proportional to 138,440,442.30, 207,660,663.45 and 57,650,912.70
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Solution
The fourth proportional to 138,440,442.30, 207,660,663.45 and 57,650,912.70 is: 86,476,369.05
Step by Step Solution
- Step 1: Write the proportion equation
138,440,442.30 : 207,660,663.45 = 57,650,912.70 : x - Step 2: Convert to fraction form
138,440,442.30/207,660,663.45 = 57,650,912.70/x - Step 3: Cross multiply
138,440,442.30x = 207,660,663.45 × 57,650,912.70 - Step 4: Simplify right side
138,440,442.30x = 11,971,826,779,780,030 - Step 5: Solve for x
x = 11,971,826,779,780,030/138,440,442.30 - Step 6: Final answer
x = 86,476,369.05
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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.