Finding the Fourth Proportional to 128,520,348.88, 177,353,107.11 and 69,781,669.60
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Solution
The fourth proportional to 128,520,348.88, 177,353,107.11 and 69,781,669.60 is: 96,296,003.17
Step by Step Solution
- Step 1: Write the proportion equation
128,520,348.88 : 177,353,107.11 = 69,781,669.60 : x - Step 2: Convert to fraction form
128,520,348.88/177,353,107.11 = 69,781,669.60/x - Step 3: Cross multiply
128,520,348.88x = 177,353,107.11 × 69,781,669.60 - Step 4: Simplify right side
128,520,348.88x = 12,375,995,922,883,430 - Step 5: Solve for x
x = 12,375,995,922,883,430/128,520,348.88 - Step 6: Final answer
x = 96,296,003.17
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.