Finding the Fourth Proportional to 128,736,027.20, 193,104,040.80 and 122,764,059.20
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Solution
The fourth proportional to 128,736,027.20, 193,104,040.80 and 122,764,059.20 is: 184,146,088.80
Step by Step Solution
- Step 1: Write the proportion equation
128,736,027.20 : 193,104,040.80 = 122,764,059.20 : x - Step 2: Convert to fraction form
128,736,027.20/193,104,040.80 = 122,764,059.20/x - Step 3: Cross multiply
128,736,027.20x = 193,104,040.80 × 122,764,059.20 - Step 4: Simplify right side
128,736,027.20x = 23,706,235,896,530,416 - Step 5: Solve for x
x = 23,706,235,896,530,416/128,736,027.20 - Step 6: Final answer
x = 184,146,088.80
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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.