Finding the Fourth Proportional to 189,623,413.76, 261,701,579.56 and 107,122,512.92
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Solution
The fourth proportional to 189,623,413.76, 261,701,579.56 and 107,122,512.92 is: 147,841,082.92
Step by Step Solution
- Step 1: Write the proportion equation
189,623,413.76 : 261,701,579.56 = 107,122,512.92 : x - Step 2: Convert to fraction form
189,623,413.76/261,701,579.56 = 107,122,512.92/x - Step 3: Cross multiply
189,623,413.76x = 261,701,579.56 × 107,122,512.92 - Step 4: Simplify right side
189,623,413.76x = 28,034,130,837,600,508 - Step 5: Solve for x
x = 28,034,130,837,600,508/189,623,413.76 - Step 6: Final answer
x = 147,841,082.92
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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.