Finding the Fourth Proportional to 100,679,284.92, 138,858,693.84 and 65,408,457
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Solution
The fourth proportional to 100,679,284.92, 138,858,693.84 and 65,408,457 is: 90,212,528.95
Step by Step Solution
- Step 1: Write the proportion equation
100,679,284.92 : 138,858,693.84 = 65,408,457 : x - Step 2: Convert to fraction form
100,679,284.92/138,858,693.84 = 65,408,457/x - Step 3: Cross multiply
100,679,284.92x = 138,858,693.84 × 65,408,457 - Step 4: Simplify right side
100,679,284.92x = 9,082,532,905,109,806 - Step 5: Solve for x
x = 9,082,532,905,109,806/100,679,284.92 - Step 6: Final answer
x = 90,212,528.95
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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.