Finding the Fourth Proportional to 128,259,899.98, 176,993,920.09 and 69,521,303.97
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Solution
The fourth proportional to 128,259,899.98, 176,993,920.09 and 69,521,303.97 is: 95,936,829.21
Step by Step Solution
- Step 1: Write the proportion equation
128,259,899.98 : 176,993,920.09 = 69,521,303.97 : x - Step 2: Convert to fraction form
128,259,899.98/176,993,920.09 = 69,521,303.97/x - Step 3: Cross multiply
128,259,899.98x = 176,993,920.09 × 69,521,303.97 - Step 4: Simplify right side
128,259,899.98x = 12,304,848,119,418,780 - Step 5: Solve for x
x = 12,304,848,119,418,780/128,259,899.98 - Step 6: Final answer
x = 95,936,829.21
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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.