Finding the Fourth Proportional to 128,259,899.11, 176,993,918.90 and 69,521,303.09
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Solution
The fourth proportional to 128,259,899.11, 176,993,918.90 and 69,521,303.09 is: 95,936,828.01
Step by Step Solution
- Step 1: Write the proportion equation
128,259,899.11 : 176,993,918.90 = 69,521,303.09 : x - Step 2: Convert to fraction form
128,259,899.11/176,993,918.90 = 69,521,303.09/x - Step 3: Cross multiply
128,259,899.11x = 176,993,918.90 × 69,521,303.09 - Step 4: Simplify right side
128,259,899.11x = 12,304,847,880,933,780 - Step 5: Solve for x
x = 12,304,847,880,933,780/128,259,899.11 - Step 6: Final answer
x = 95,936,828.01
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1.5x scale
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.