Finding the Fourth Proportional to 128,122,351.74, 176,807,965.00 and 69,383,672.69
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Solution
The fourth proportional to 128,122,351.74, 176,807,965.00 and 69,383,672.69 is: 95,748,991.54
Step by Step Solution
- Step 1: Write the proportion equation
128,122,351.74 : 176,807,965.00 = 69,383,672.69 : x - Step 2: Convert to fraction form
128,122,351.74/176,807,965.00 = 69,383,672.69/x - Step 3: Cross multiply
128,122,351.74x = 176,807,965.00 × 69,383,672.69 - Step 4: Simplify right side
128,122,351.74x = 12,267,585,972,198,058 - Step 5: Solve for x
x = 12,267,585,972,198,058/128,122,351.74 - Step 6: Final answer
x = 95,748,991.54
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.