Finding the Fourth Proportional to 129,656,415.36, 178,916,153.40 and 70,916,044.80
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Solution
The fourth proportional to 129,656,415.36, 178,916,153.40 and 70,916,044.80 is: 97,858,836.49
Step by Step Solution
- Step 1: Write the proportion equation
129,656,415.36 : 178,916,153.40 = 70,916,044.80 : x - Step 2: Convert to fraction form
129,656,415.36/178,916,153.40 = 70,916,044.80/x - Step 3: Cross multiply
129,656,415.36x = 178,916,153.40 × 70,916,044.80 - Step 4: Simplify right side
129,656,415.36x = 12,688,025,949,958,072 - Step 5: Solve for x
x = 12,688,025,949,958,072/129,656,415.36 - Step 6: Final answer
x = 97,858,836.49
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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.