Finding the Fourth Proportional to 128,736,424.80, 193,104,637.20 and 120,170,383.20
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Solution
The fourth proportional to 128,736,424.80, 193,104,637.20 and 120,170,383.20 is: 180,255,574.80
Step by Step Solution
- Step 1: Write the proportion equation
128,736,424.80 : 193,104,637.20 = 120,170,383.20 : x - Step 2: Convert to fraction form
128,736,424.80/193,104,637.20 = 120,170,383.20/x - Step 3: Cross multiply
128,736,424.80x = 193,104,637.20 × 120,170,383.20 - Step 4: Simplify right side
128,736,424.80x = 23,205,458,250,020,976 - Step 5: Solve for x
x = 23,205,458,250,020,976/128,736,424.80 - Step 6: Final answer
x = 180,255,574.80
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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.