Finding the Fourth Proportional to 129,350,917.07, 178,504,990.55 and 73,596,336.31
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Solution
The fourth proportional to 129,350,917.07, 178,504,990.55 and 73,596,336.31 is: 101,563,356.61
Step by Step Solution
- Step 1: Write the proportion equation
129,350,917.07 : 178,504,990.55 = 73,596,336.31 : x - Step 2: Convert to fraction form
129,350,917.07/178,504,990.55 = 73,596,336.31/x - Step 3: Cross multiply
129,350,917.07x = 178,504,990.55 × 73,596,336.31 - Step 4: Simplify right side
129,350,917.07x = 13,137,313,317,662,308 - Step 5: Solve for x
x = 13,137,313,317,662,308/129,350,917.07 - Step 6: Final answer
x = 101,563,356.61
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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.