Finding the Fourth Proportional to 128,122,292.88, 192,490,034.17 and 82,154,223.75
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Solution
The fourth proportional to 128,122,292.88, 192,490,034.17 and 82,154,223.75 is: 123,427,929.53
Step by Step Solution
- Step 1: Write the proportion equation
128,122,292.88 : 192,490,034.17 = 82,154,223.75 : x - Step 2: Convert to fraction form
128,122,292.88/192,490,034.17 = 82,154,223.75/x - Step 3: Cross multiply
128,122,292.88x = 192,490,034.17 × 82,154,223.75 - Step 4: Simplify right side
128,122,292.88x = 15,813,869,336,847,324 - Step 5: Solve for x
x = 15,813,869,336,847,324/128,122,292.88 - Step 6: Final answer
x = 123,427,929.53
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.