Finding the Fourth Proportional to 128,969,868.96, 177,976,651.68 and 73,214,802
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Solution
The fourth proportional to 128,969,868.96, 177,976,651.68 and 73,214,802 is: 101,035,423.38
Step by Step Solution
- Step 1: Write the proportion equation
128,969,868.96 : 177,976,651.68 = 73,214,802 : x - Step 2: Convert to fraction form
128,969,868.96/177,976,651.68 = 73,214,802/x - Step 3: Cross multiply
128,969,868.96x = 177,976,651.68 × 73,214,802 - Step 4: Simplify right side
128,969,868.96x = 13,030,525,313,374,168 - Step 5: Solve for x
x = 13,030,525,313,374,168/128,969,868.96 - Step 6: Final answer
x = 101,035,423.38
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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.