Finding the Fourth Proportional to 128,158,850.09, 176,860,062.29 and 69,421,515.21
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Solution
The fourth proportional to 128,158,850.09, 176,860,062.29 and 69,421,515.21 is: 95,802,150.97
Step by Step Solution
- Step 1: Write the proportion equation
128,158,850.09 : 176,860,062.29 = 69,421,515.21 : x - Step 2: Convert to fraction form
128,158,850.09/176,860,062.29 = 69,421,515.21/x - Step 3: Cross multiply
128,158,850.09x = 176,860,062.29 × 69,421,515.21 - Step 4: Simplify right side
128,158,850.09x = 12,277,893,504,480,334 - Step 5: Solve for x
x = 12,277,893,504,480,334/128,158,850.09 - Step 6: Final answer
x = 95,802,150.97
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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.