Finding the Fourth Proportional to 128,561,848.84, 177,416,630.94 and 69,825,662.92
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Solution
The fourth proportional to 128,561,848.84, 177,416,630.94 and 69,825,662.92 is: 96,360,109.79
Step by Step Solution
- Step 1: Write the proportion equation
128,561,848.84 : 177,416,630.94 = 69,825,662.92 : x - Step 2: Convert to fraction form
128,561,848.84/177,416,630.94 = 69,825,662.92/x - Step 3: Cross multiply
128,561,848.84x = 177,416,630.94 × 69,825,662.92 - Step 4: Simplify right side
128,561,848.84x = 12,388,233,868,418,482 - Step 5: Solve for x
x = 12,388,233,868,418,482/128,561,848.84 - Step 6: Final answer
x = 96,360,109.79
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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.