Finding the Fourth Proportional to 138,390,132.96, 190,982,370.24 and 76,514,466.24
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Solution
The fourth proportional to 138,390,132.96, 190,982,370.24 and 76,514,466.24 is: 105,592,167.65
Step by Step Solution
- Step 1: Write the proportion equation
138,390,132.96 : 190,982,370.24 = 76,514,466.24 : x - Step 2: Convert to fraction form
138,390,132.96/190,982,370.24 = 76,514,466.24/x - Step 3: Cross multiply
138,390,132.96x = 190,982,370.24 × 76,514,466.24 - Step 4: Simplify right side
138,390,132.96x = 14,612,914,120,163,660 - Step 5: Solve for x
x = 14,612,914,120,163,660/138,390,132.96 - Step 6: Final answer
x = 105,592,167.65
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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.