Finding the Fourth Proportional to 128,708,527.20, 193,062,790.80 and 122,736,559.20
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Solution
The fourth proportional to 128,708,527.20, 193,062,790.80 and 122,736,559.20 is: 184,104,838.80
Step by Step Solution
- Step 1: Write the proportion equation
128,708,527.20 : 193,062,790.80 = 122,736,559.20 : x - Step 2: Convert to fraction form
128,708,527.20/193,062,790.80 = 122,736,559.20/x - Step 3: Cross multiply
128,708,527.20x = 193,062,790.80 × 122,736,559.20 - Step 4: Simplify right side
128,708,527.20x = 23,695,862,652,341,416 - Step 5: Solve for x
x = 23,695,862,652,341,416/128,708,527.20 - Step 6: Final answer
x = 184,104,838.80
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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.