Finding the Fourth Proportional to 108,871,409.20, 163,307,113.80 and 81,997,553.20
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Solution
The fourth proportional to 108,871,409.20, 163,307,113.80 and 81,997,553.20 is: 122,996,329.80
Step by Step Solution
- Step 1: Write the proportion equation
108,871,409.20 : 163,307,113.80 = 81,997,553.20 : x - Step 2: Convert to fraction form
108,871,409.20/163,307,113.80 = 81,997,553.20/x - Step 3: Cross multiply
108,871,409.20x = 163,307,113.80 × 81,997,553.20 - Step 4: Simplify right side
108,871,409.20x = 13,390,783,751,753,956 - Step 5: Solve for x
x = 13,390,783,751,753,956/108,871,409.20 - Step 6: Final answer
x = 122,996,329.80
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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.