Finding the Fourth Proportional to 128,259,900.11, 176,993,920.28 and 69,521,304.09
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Solution
The fourth proportional to 128,259,900.11, 176,993,920.28 and 69,521,304.09 is: 95,936,829.39
Step by Step Solution
- Step 1: Write the proportion equation
128,259,900.11 : 176,993,920.28 = 69,521,304.09 : x - Step 2: Convert to fraction form
128,259,900.11/176,993,920.28 = 69,521,304.09/x - Step 3: Cross multiply
128,259,900.11x = 176,993,920.28 × 69,521,304.09 - Step 4: Simplify right side
128,259,900.11x = 12,304,848,153,867,098 - Step 5: Solve for x
x = 12,304,848,153,867,098/128,259,900.11 - Step 6: Final answer
x = 95,936,829.39
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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.