Finding the Fourth Proportional to 128,015,194.20, 192,023,289.50 and 30,970,746.09
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Solution
The fourth proportional to 128,015,194.20, 192,023,289.50 and 30,970,746.09 is: 46,456,239.66
Step by Step Solution
- Step 1: Write the proportion equation
128,015,194.20 : 192,023,289.50 = 30,970,746.09 : x - Step 2: Convert to fraction form
128,015,194.20/192,023,289.50 = 30,970,746.09/x - Step 3: Cross multiply
128,015,194.20x = 192,023,289.50 × 30,970,746.09 - Step 4: Simplify right side
128,015,194.20x = 5,947,104,542,316,209 - Step 5: Solve for x
x = 5,947,104,542,316,209/128,015,194.20 - Step 6: Final answer
x = 46,456,239.66
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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.