Finding the Fourth Proportional to 128,122,353.39, 176,807,967.30 and 69,383,674.34
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Solution
The fourth proportional to 128,122,353.39, 176,807,967.30 and 69,383,674.34 is: 95,748,993.82
Step by Step Solution
- Step 1: Write the proportion equation
128,122,353.39 : 176,807,967.30 = 69,383,674.34 : x - Step 2: Convert to fraction form
128,122,353.39/176,807,967.30 = 69,383,674.34/x - Step 3: Cross multiply
128,122,353.39x = 176,807,967.30 × 69,383,674.34 - Step 4: Simplify right side
128,122,353.39x = 12,267,586,422,976,528 - Step 5: Solve for x
x = 12,267,586,422,976,528/128,122,353.39 - Step 6: Final answer
x = 95,748,993.82
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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.