Finding the Fourth Proportional to 128,259,899.37, 176,993,919.25 and 69,521,303.35
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Solution
The fourth proportional to 128,259,899.37, 176,993,919.25 and 69,521,303.35 is: 95,936,828.36
Step by Step Solution
- Step 1: Write the proportion equation
128,259,899.37 : 176,993,919.25 = 69,521,303.35 : x - Step 2: Convert to fraction form
128,259,899.37/176,993,919.25 = 69,521,303.35/x - Step 3: Cross multiply
128,259,899.37x = 176,993,919.25 × 69,521,303.35 - Step 4: Simplify right side
128,259,899.37x = 12,304,847,951,284,654 - Step 5: Solve for x
x = 12,304,847,951,284,654/128,259,899.37 - Step 6: Final answer
x = 95,936,828.36
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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.