Finding the Fourth Proportional to 118,087,270.40, 177,130,905.60 and 66,431,205.20
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Solution
The fourth proportional to 118,087,270.40, 177,130,905.60 and 66,431,205.20 is: 99,646,807.80
Step by Step Solution
- Step 1: Write the proportion equation
118,087,270.40 : 177,130,905.60 = 66,431,205.20 : x - Step 2: Convert to fraction form
118,087,270.40/177,130,905.60 = 66,431,205.20/x - Step 3: Cross multiply
118,087,270.40x = 177,130,905.60 × 66,431,205.20 - Step 4: Simplify right side
118,087,270.40x = 11,767,019,537,175,430 - Step 5: Solve for x
x = 11,767,019,537,175,430/118,087,270.40 - Step 6: Final answer
x = 99,646,807.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.