Finding the Fourth Proportional to 123,389,812.38, 170,178,654.36 and 108,473,242.62
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Solution
The fourth proportional to 123,389,812.38, 170,178,654.36 and 108,473,242.62 is: 149,605,790.84
Step by Step Solution
- Step 1: Write the proportion equation
123,389,812.38 : 170,178,654.36 = 108,473,242.62 : x - Step 2: Convert to fraction form
123,389,812.38/170,178,654.36 = 108,473,242.62/x - Step 3: Cross multiply
123,389,812.38x = 170,178,654.36 × 108,473,242.62 - Step 4: Simplify right side
123,389,812.38x = 18,459,830,463,137,404 - Step 5: Solve for x
x = 18,459,830,463,137,404/123,389,812.38 - Step 6: Final answer
x = 149,605,790.84
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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.