Finding the Fourth Proportional to 138,390,422.96, 190,982,770.44 and 76,514,756.24
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Solution
The fourth proportional to 138,390,422.96, 190,982,770.44 and 76,514,756.24 is: 105,592,567.85
Step by Step Solution
- Step 1: Write the proportion equation
138,390,422.96 : 190,982,770.44 = 76,514,756.24 : x - Step 2: Convert to fraction form
138,390,422.96/190,982,770.44 = 76,514,756.24/x - Step 3: Cross multiply
138,390,422.96x = 190,982,770.44 × 76,514,756.24 - Step 4: Simplify right side
138,390,422.96x = 14,613,000,126,256,476 - Step 5: Solve for x
x = 14,613,000,126,256,476/138,390,422.96 - Step 6: Final answer
x = 105,592,567.85
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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.