Finding the Fourth Proportional to 128,662,782.60, 177,556,011.45 and 69,925,451.97
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Solution
The fourth proportional to 128,662,782.60, 177,556,011.45 and 69,925,451.97 is: 96,497,869.08
Step by Step Solution
- Step 1: Write the proportion equation
128,662,782.60 : 177,556,011.45 = 69,925,451.97 : x - Step 2: Convert to fraction form
128,662,782.60/177,556,011.45 = 69,925,451.97/x - Step 3: Cross multiply
128,662,782.60x = 177,556,011.45 × 69,925,451.97 - Step 4: Simplify right side
128,662,782.60x = 12,415,684,350,631,744 - Step 5: Solve for x
x = 12,415,684,350,631,744/128,662,782.60 - Step 6: Final answer
x = 96,497,869.08
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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.