Finding the Fourth Proportional to 128,129,139.12, 192,226,448.07 and 37,252,728.12
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Solution
The fourth proportional to 128,129,139.12, 192,226,448.07 and 37,252,728.12 is: 55,888,610.95
Step by Step Solution
- Step 1: Write the proportion equation
128,129,139.12 : 192,226,448.07 = 37,252,728.12 : x - Step 2: Convert to fraction form
128,129,139.12/192,226,448.07 = 37,252,728.12/x - Step 3: Cross multiply
128,129,139.12x = 192,226,448.07 × 37,252,728.12 - Step 4: Simplify right side
128,129,139.12x = 7,160,959,607,425,008 - Step 5: Solve for x
x = 7,160,959,607,425,008/128,129,139.12 - Step 6: Final answer
x = 55,888,610.95
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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.